From 65b20d2dde1556fbcc2e9fc43055c214a197e08a Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Mon, 18 Aug 2025 12:17:57 +0100
Subject: [PATCH 1/7] Add ignore list and refactor logic into singularize
 method

---
 .../functions/utils/operationIdGeneration.js       | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
index f25ca29bb5..e423b4fe1d 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
@@ -4,6 +4,9 @@ import { isPathParam, removePrefix, isSingleResourceIdentifier } from './resourc
 const CAMEL_CASE = /[A-Z]?[a-z]+/g;
 const CAMEL_CASE_WITH_ABBREVIATIONS = /[A-Z]+(?![a-z])|[A-Z]*[a-z]+/g;
 
+// List of capitalized nouns that should not be pluralized in any case.
+const IGNORE_LIST = ['Fts'];
+
 /**
  * Returns IPA Compliant Operation ID.
  *
@@ -40,7 +43,7 @@ export function generateOperationID(method, path) {
 
   let opID = verb;
   for (let i = 0; i < nouns.length - 1; i++) {
-    opID += inflection.singularize(nouns[i]);
+    opID += singularize(nouns[i]);
   }
 
   // singularize final noun, dependent on resource identifier - leave custom nouns alone
@@ -49,7 +52,7 @@ export function generateOperationID(method, path) {
       !camelCaseCustomMethod) ||
     verb === 'create'
   ) {
-    nouns[nouns.length - 1] = inflection.singularize(nouns[nouns.length - 1]);
+    nouns[nouns.length - 1] = singularize(nouns[nouns.length - 1]);
   }
 
   opID += nouns.pop();
@@ -92,3 +95,10 @@ function deriveActionVerb(method) {
 function capitalize(val) {
   return String(val).charAt(0).toUpperCase() + String(val).slice(1);
 }
+
+function singularize(noun) {
+  if (!IGNORE_LIST.includes(noun)) {
+    return inflection.singularize(noun);
+  }
+  return noun;
+}

From f1ec293ed1f29bf0c6a9d6e7eaf8572dcd49229e Mon Sep 17 00:00:00 2001
From: Sophia Terry <157913563+sphterry@users.noreply.github.com>
Date: Mon, 18 Aug 2025 13:45:31 +0100
Subject: [PATCH 2/7] Update comment

Co-authored-by: Lovisa Berggren <59226031+lovisaberggren@users.noreply.github.com>
---
 .../ipa/rulesets/functions/utils/operationIdGeneration.js       | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
index e423b4fe1d..801a178517 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
@@ -4,7 +4,7 @@ import { isPathParam, removePrefix, isSingleResourceIdentifier } from './resourc
 const CAMEL_CASE = /[A-Z]?[a-z]+/g;
 const CAMEL_CASE_WITH_ABBREVIATIONS = /[A-Z]+(?![a-z])|[A-Z]*[a-z]+/g;
 
-// List of capitalized nouns that should not be pluralized in any case.
+// List of capitalized nouns that should not be singularized in any case.
 const IGNORE_LIST = ['Fts'];
 
 /**

From 97d448f100adf329e6e1bd610d92ed88f39e270e Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Mon, 18 Aug 2025 12:21:40 +0100
Subject: [PATCH 3/7] PATCH version bump

---
 tools/spectral/ipa/package-lock.json | 4 ++--
 tools/spectral/ipa/package.json      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/spectral/ipa/package-lock.json b/tools/spectral/ipa/package-lock.json
index 0c8997a2e7..f1e99ca948 100644
--- a/tools/spectral/ipa/package-lock.json
+++ b/tools/spectral/ipa/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@mongodb-js/ipa-validation-ruleset",
-  "version": "0.0.1",
+  "version": "2.1.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@mongodb-js/ipa-validation-ruleset",
-      "version": "0.0.1",
+      "version": "2.1.1",
       "license": "Apache-2.0",
       "dependencies": {
         "@stoplight/spectral-cli": "6.15.0",
diff --git a/tools/spectral/ipa/package.json b/tools/spectral/ipa/package.json
index bc72844bb7..607918770b 100644
--- a/tools/spectral/ipa/package.json
+++ b/tools/spectral/ipa/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mongodb-js/ipa-validation-ruleset",
-  "version": "2.1.0",
+  "version": "2.1.1",
   "description": "Custom validation rules for MongoDB API Standards (IPA).",
   "keywords": [
     "mongodb",

From 1d6e1e48d4133a43b2dfed18cbe2991e4d8c820d Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Tue, 19 Aug 2025 12:06:30 +0100
Subject: [PATCH 4/7] Move ignore list to functionOptions

---
 tools/spectral/ipa/rulesets/IPA-104.yaml            |  2 ++
 tools/spectral/ipa/rulesets/IPA-105.yaml            |  2 ++
 tools/spectral/ipa/rulesets/IPA-106.yaml            |  2 ++
 tools/spectral/ipa/rulesets/IPA-107.yaml            |  2 ++
 tools/spectral/ipa/rulesets/IPA-108.yaml            |  2 ++
 tools/spectral/ipa/rulesets/IPA-109.yaml            |  3 +++
 .../rulesets/functions/IPA104ValidOperationID.js    |  4 ++--
 .../rulesets/functions/IPA105ValidOperationID.js    |  4 ++--
 .../rulesets/functions/IPA106ValidOperationID.js    |  4 ++--
 .../rulesets/functions/IPA107ValidOperationID.js    |  4 ++--
 .../rulesets/functions/IPA108ValidOperationID.js    |  4 ++--
 .../rulesets/functions/IPA109ValidOperationID.js    |  4 ++--
 .../functions/utils/operationIdGeneration.js        | 13 +++++--------
 .../validateOperationIdAndReturnErrors.js           |  4 ++--
 14 files changed, 32 insertions(+), 22 deletions(-)

diff --git a/tools/spectral/ipa/rulesets/IPA-104.yaml b/tools/spectral/ipa/rulesets/IPA-104.yaml
index fb7783a4dc..55fdd2b0ec 100644
--- a/tools/spectral/ipa/rulesets/IPA-104.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-104.yaml
@@ -115,3 +115,5 @@ rules:
       function: 'IPA104ValidOperationID'
       functionOptions:
         methodName: 'get'
+        ignoreList:
+          - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-105.yaml b/tools/spectral/ipa/rulesets/IPA-105.yaml
index d721b3c6b4..ee9b8936cc 100644
--- a/tools/spectral/ipa/rulesets/IPA-105.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-105.yaml
@@ -95,3 +95,5 @@ rules:
       function: 'IPA105ValidOperationID'
       functionOptions:
         methodName: 'list'
+        ignoreList:
+          - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-106.yaml b/tools/spectral/ipa/rulesets/IPA-106.yaml
index dafa6ce040..1e3d04c8dc 100644
--- a/tools/spectral/ipa/rulesets/IPA-106.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-106.yaml
@@ -129,3 +129,5 @@ rules:
       function: 'IPA106ValidOperationID'
       functionOptions:
         methodName: 'create'
+        ignoreList:
+          - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-107.yaml b/tools/spectral/ipa/rulesets/IPA-107.yaml
index 31fee52af9..c720a20141 100644
--- a/tools/spectral/ipa/rulesets/IPA-107.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-107.yaml
@@ -130,3 +130,5 @@ rules:
       function: 'IPA107ValidOperationID'
       functionOptions:
         methodName: 'update'
+        ignoreList:
+          - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-108.yaml b/tools/spectral/ipa/rulesets/IPA-108.yaml
index abc11f831b..6d1de08bd9 100644
--- a/tools/spectral/ipa/rulesets/IPA-108.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-108.yaml
@@ -71,6 +71,8 @@ rules:
       function: 'IPA108ValidOperationID'
       functionOptions:
         methodName: 'delete'
+        ignoreList:
+          - 'Fts'
 
 functions:
   - IPA108DeleteMethodResponseShouldNotHaveSchema
diff --git a/tools/spectral/ipa/rulesets/IPA-109.yaml b/tools/spectral/ipa/rulesets/IPA-109.yaml
index e41d434d2a..a1f052fa46 100644
--- a/tools/spectral/ipa/rulesets/IPA-109.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-109.yaml
@@ -75,3 +75,6 @@ rules:
     given: '$.paths[*][*]'
     then:
       function: 'IPA109ValidOperationID'
+      functionOptions:
+        ignoreList:
+          - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
index 5eb6c30a5d..caa61ead91 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
@@ -6,7 +6,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-104-valid-operation-id';
 
-export default (input, { methodName }, { path, documentInventory }) => {
+export default (input, { methodName, ignoreList }, { path, documentInventory }) => {
   const resourcePath = path[1];
   const oas = documentInventory.resolved;
   const resourcePaths = getResourcePathItems(resourcePath, oas.paths);
@@ -23,7 +23,7 @@ export default (input, { methodName }, { path, documentInventory }) => {
     if (hasMethodVerbOverride(input, methodName)) {
       methodName = input[VERB_OVERRIDE_EXTENSION].verb;
     }
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
 
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
diff --git a/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
index 7b2a3d9b96..749b786bed 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
@@ -6,7 +6,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-105-valid-operation-id';
 
-export default (input, { methodName }, { path, documentInventory }) => {
+export default (input, { methodName, ignoreList }, { path, documentInventory }) => {
   const resourcePath = path[1];
   const oas = documentInventory.resolved;
   const resourcePaths = getResourcePathItems(resourcePath, oas.paths);
@@ -24,7 +24,7 @@ export default (input, { methodName }, { path, documentInventory }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
index 47842e6adf..e8d41f1f4a 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-106-valid-operation-id';
 
-export default (input, { methodName }, { path }) => {
+export default (input, { methodName, ignoreList }, { path }) => {
   const resourcePath = path[1];
 
   if (hasCustomMethodOverride(input) || isCustomMethodIdentifier(resourcePath)) {
@@ -17,7 +17,7 @@ export default (input, { methodName }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
index 65f1769ccb..1a0f50d17e 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-107-valid-operation-id';
 
-export default (input, { methodName }, { path }) => {
+export default (input, { methodName, ignoreList }, { path }) => {
   const resourcePath = path[1];
 
   if (isCustomMethodIdentifier(resourcePath) || hasCustomMethodOverride(input)) {
@@ -17,7 +17,7 @@ export default (input, { methodName }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
index d306735575..d223c50660 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-108-valid-operation-id';
 
-export default (input, { methodName }, { path }) => {
+export default (input, { methodName, ignoreList }, { path }) => {
   const resourcePath = path[1];
 
   if (isCustomMethodIdentifier(resourcePath) || hasCustomMethodOverride(input)) {
@@ -17,7 +17,7 @@ export default (input, { methodName }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
index 9be8269c49..480f6ee697 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-109-valid-operation-id';
 
-export default (input, _, { path }) => {
+export default (input, { ignoreList }, { path }) => {
   const resourcePath = path[1];
 
   if (!isCustomMethodIdentifier(resourcePath) && !hasCustomMethodOverride(input)) {
@@ -28,7 +28,7 @@ export default (input, _, { path }) => {
       return;
     }
 
-    const errors = validateOperationIdAndReturnErrors(methodName, endpointUrl, input, path);
+    const errors = validateOperationIdAndReturnErrors(methodName, endpointUrl, input, path, ignoreList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
index 801a178517..7dfb853d1b 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
@@ -4,16 +4,13 @@ import { isPathParam, removePrefix, isSingleResourceIdentifier } from './resourc
 const CAMEL_CASE = /[A-Z]?[a-z]+/g;
 const CAMEL_CASE_WITH_ABBREVIATIONS = /[A-Z]+(?![a-z])|[A-Z]*[a-z]+/g;
 
-// List of capitalized nouns that should not be singularized in any case.
-const IGNORE_LIST = ['Fts'];
-
 /**
  * Returns IPA Compliant Operation ID.
  *
  * @param method the standard method name (create, update, get etc.), custom method name, or empty string (only for legacy custom methods)
  * @param path the path for the endpoint
  */
-export function generateOperationID(method, path) {
+export function generateOperationID(method, path, ignoreList = []) {
   if (!path) {
     return method;
   }
@@ -43,7 +40,7 @@ export function generateOperationID(method, path) {
 
   let opID = verb;
   for (let i = 0; i < nouns.length - 1; i++) {
-    opID += singularize(nouns[i]);
+    opID += singularize(nouns[i], ignoreList);
   }
 
   // singularize final noun, dependent on resource identifier - leave custom nouns alone
@@ -52,7 +49,7 @@ export function generateOperationID(method, path) {
       !camelCaseCustomMethod) ||
     verb === 'create'
   ) {
-    nouns[nouns.length - 1] = singularize(nouns[nouns.length - 1]);
+    nouns[nouns.length - 1] = singularize(nouns[nouns.length - 1], ignoreList);
   }
 
   opID += nouns.pop();
@@ -96,8 +93,8 @@ function capitalize(val) {
   return String(val).charAt(0).toUpperCase() + String(val).slice(1);
 }
 
-function singularize(noun) {
-  if (!IGNORE_LIST.includes(noun)) {
+function singularize(noun, ignoreList = []) {
+  if (!ignoreList.includes(noun)) {
     return inflection.singularize(noun);
   }
   return noun;
diff --git a/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js b/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
index 1bbf71e338..643bce889c 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
@@ -18,9 +18,9 @@ const TOO_LONG_OP_ID_ERROR_MESSAGE =
  * @param path the path to the operation object being evaluated, used for error reporting with Spectral.
  * @returns {[{path: string[], message: string}]} an array of error objects, each containing a path and a message, or an empty array if no errors are found.
  */
-export function validateOperationIdAndReturnErrors(methodName, resourcePath, operationObject, path) {
+export function validateOperationIdAndReturnErrors(methodName, resourcePath, operationObject, path, ignoreList) {
   const operationId = operationObject.operationId;
-  const expectedOperationId = generateOperationID(methodName, resourcePath);
+  const expectedOperationId = generateOperationID(methodName, resourcePath, ignoreList);
 
   const operationIdPath = path.concat(['operationId']);
 

From 692d9744d4bab1081274b45257d143a5a23709b2 Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Tue, 19 Aug 2025 12:15:40 +0100
Subject: [PATCH 5/7] Add tests for ignoreList

---
 .../ipa/__tests__/IPA104ValidOperationID.test.js   | 14 ++++++++++++++
 .../ipa/__tests__/IPA105ValidOperationID.test.js   | 14 ++++++++++++++
 .../ipa/__tests__/IPA106ValidOperationID.test.js   | 14 ++++++++++++++
 .../ipa/__tests__/IPA107ValidOperationID.test.js   | 14 ++++++++++++++
 .../ipa/__tests__/IPA108ValidOperationID.test.js   | 14 ++++++++++++++
 .../ipa/__tests__/IPA109ValidOperationID.test.js   | 14 ++++++++++++++
 6 files changed, 84 insertions(+)

diff --git a/tools/spectral/ipa/__tests__/IPA104ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA104ValidOperationID.test.js
index 06b6be8f40..1ecc24552c 100644
--- a/tools/spectral/ipa/__tests__/IPA104ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA104ValidOperationID.test.js
@@ -145,4 +145,18 @@ testRule('xgen-IPA-104-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/fts/indexes/{indexId} ': {
+          get: {
+            operationId: 'getGroupClusterFtsIndex',
+            'x-xgen-operation-id-override': 'getClusterFtsIndex',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);
diff --git a/tools/spectral/ipa/__tests__/IPA105ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA105ValidOperationID.test.js
index ec6ad1c05c..6bf654c213 100644
--- a/tools/spectral/ipa/__tests__/IPA105ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA105ValidOperationID.test.js
@@ -136,4 +136,18 @@ testRule('xgen-IPA-105-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/hosts/{processId}/fts/metrics': {
+          get: {
+            operationId: 'listGroupHostFtsMetrics',
+            'x-xgen-operation-id-override': 'listHostFtsMetrics',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);
diff --git a/tools/spectral/ipa/__tests__/IPA106ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA106ValidOperationID.test.js
index 5ba1471394..7c97022698 100644
--- a/tools/spectral/ipa/__tests__/IPA106ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA106ValidOperationID.test.js
@@ -168,4 +168,18 @@ testRule('xgen-IPA-106-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/fts/indexes': {
+          post: {
+            operationId: 'createGroupClusterFtsIndex',
+            'x-xgen-operation-id-override': 'createClusterFtsIndex',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);
diff --git a/tools/spectral/ipa/__tests__/IPA107ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA107ValidOperationID.test.js
index 5eca9ce856..5c4885ec97 100644
--- a/tools/spectral/ipa/__tests__/IPA107ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA107ValidOperationID.test.js
@@ -162,4 +162,18 @@ testRule('xgen-IPA-107-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/fts/indexes/{indexId}': {
+          put: {
+            operationId: 'updateGroupClusterFtsIndex',
+            'x-xgen-operation-id-override': 'updateClusterFtsIndex',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);
diff --git a/tools/spectral/ipa/__tests__/IPA108ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA108ValidOperationID.test.js
index 0f193ca39d..161fa15cff 100644
--- a/tools/spectral/ipa/__tests__/IPA108ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA108ValidOperationID.test.js
@@ -167,4 +167,18 @@ testRule('xgen-IPA-108-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/fts/indexes/{indexId}': {
+          delete: {
+            operationId: 'deleteGroupClusterFtsIndex',
+            'x-xgen-operation-id-override': 'deleteClusterFtsIndex',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);
diff --git a/tools/spectral/ipa/__tests__/IPA109ValidOperationID.test.js b/tools/spectral/ipa/__tests__/IPA109ValidOperationID.test.js
index bb768016b4..d5aa026fd2 100644
--- a/tools/spectral/ipa/__tests__/IPA109ValidOperationID.test.js
+++ b/tools/spectral/ipa/__tests__/IPA109ValidOperationID.test.js
@@ -137,4 +137,18 @@ testRule('xgen-IPA-109-valid-operation-id', [
     },
     errors: [],
   },
+  {
+    name: 'valid method that needs ignoreList',
+    document: {
+      paths: {
+        '/api/atlas/v2/groups/{groupId}/clusters/{clusterName}/fts/indexes/{indexId}:test': {
+          delete: {
+            operationId: 'testGroupClusterFtsIndex',
+            'x-xgen-operation-id-override': 'testClusterFtsIndex',
+          },
+        },
+      },
+    },
+    errors: [],
+  },
 ]);

From dd8b4042f62b7d1b2b10a88505e18d9b7d2366dc Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Tue, 19 Aug 2025 12:17:37 +0100
Subject: [PATCH 6/7] Revert "PATCH version bump"

This reverts commit 97d448f100adf329e6e1bd610d92ed88f39e270e.
---
 tools/spectral/ipa/package-lock.json | 4 ++--
 tools/spectral/ipa/package.json      | 2 +-
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/tools/spectral/ipa/package-lock.json b/tools/spectral/ipa/package-lock.json
index f1e99ca948..0c8997a2e7 100644
--- a/tools/spectral/ipa/package-lock.json
+++ b/tools/spectral/ipa/package-lock.json
@@ -1,12 +1,12 @@
 {
   "name": "@mongodb-js/ipa-validation-ruleset",
-  "version": "2.1.1",
+  "version": "0.0.1",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "@mongodb-js/ipa-validation-ruleset",
-      "version": "2.1.1",
+      "version": "0.0.1",
       "license": "Apache-2.0",
       "dependencies": {
         "@stoplight/spectral-cli": "6.15.0",
diff --git a/tools/spectral/ipa/package.json b/tools/spectral/ipa/package.json
index 607918770b..bc72844bb7 100644
--- a/tools/spectral/ipa/package.json
+++ b/tools/spectral/ipa/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@mongodb-js/ipa-validation-ruleset",
-  "version": "2.1.1",
+  "version": "2.1.0",
   "description": "Custom validation rules for MongoDB API Standards (IPA).",
   "keywords": [
     "mongodb",

From 506eec045b89f83a7ea2362963c8f96c5d59ff37 Mon Sep 17 00:00:00 2001
From: Sophia Marie Terry <sophia.terry@mongodb.com>
Date: Tue, 19 Aug 2025 17:35:11 +0100
Subject: [PATCH 7/7] Alter name to 'ignorePluralizationList' and add
 documentation

---
 tools/spectral/ipa/rulesets/IPA-104.yaml      |  7 ++++-
 tools/spectral/ipa/rulesets/IPA-105.yaml      |  7 ++++-
 tools/spectral/ipa/rulesets/IPA-106.yaml      |  7 ++++-
 tools/spectral/ipa/rulesets/IPA-107.yaml      |  7 ++++-
 tools/spectral/ipa/rulesets/IPA-108.yaml      |  6 +++-
 tools/spectral/ipa/rulesets/IPA-109.yaml      |  6 +++-
 tools/spectral/ipa/rulesets/README.md         | 28 +++++++++++++++++++
 .../functions/IPA104ValidOperationID.js       |  4 +--
 .../functions/IPA105ValidOperationID.js       |  4 +--
 .../functions/IPA106ValidOperationID.js       |  4 +--
 .../functions/IPA107ValidOperationID.js       |  4 +--
 .../functions/IPA108ValidOperationID.js       |  4 +--
 .../functions/IPA109ValidOperationID.js       |  4 +--
 .../functions/utils/operationIdGeneration.js  | 10 +++----
 .../validateOperationIdAndReturnErrors.js     | 10 +++++--
 15 files changed, 87 insertions(+), 25 deletions(-)

diff --git a/tools/spectral/ipa/rulesets/IPA-104.yaml b/tools/spectral/ipa/rulesets/IPA-104.yaml
index 55fdd2b0ec..9053f87e66 100644
--- a/tools/spectral/ipa/rulesets/IPA-104.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-104.yaml
@@ -108,6 +108,11 @@ rules:
       Rule checks for the following conditions:
         - Applies only to GET methods on single resources or singleton resources
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+
+      ##### Configuration
+      This rule includes two configuration options:
+        - `methodName`: The verb to be used in the OperationIds
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-104-valid-operation-id'
     severity: warn
     given: '#GetOperationObject'
@@ -115,5 +120,5 @@ rules:
       function: 'IPA104ValidOperationID'
       functionOptions:
         methodName: 'get'
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-105.yaml b/tools/spectral/ipa/rulesets/IPA-105.yaml
index ee9b8936cc..4cd05a8d71 100644
--- a/tools/spectral/ipa/rulesets/IPA-105.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-105.yaml
@@ -88,6 +88,11 @@ rules:
         - Applies only to GET methods on resource collection paths
         - Ignores singleton resources
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+
+      ##### Configuration
+      This rule includes two configuration options:
+        - `methodName`: The verb to be used in the OperationIds
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-105-valid-operation-id'
     severity: warn
     given: '#GetOperationObject'
@@ -95,5 +100,5 @@ rules:
       function: 'IPA105ValidOperationID'
       functionOptions:
         methodName: 'list'
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-106.yaml b/tools/spectral/ipa/rulesets/IPA-106.yaml
index 1e3d04c8dc..2938c632ac 100644
--- a/tools/spectral/ipa/rulesets/IPA-106.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-106.yaml
@@ -122,6 +122,11 @@ rules:
       Rule checks for the following conditions:
         - Applies only to POST methods that are not [custom methods](https://mongodb.github.io/ipa/109)
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+
+      ##### Configuration
+      This rule includes two configuration options:
+        - `methodName`: The verb to be used in the OperationIds
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-106-valid-operation-id'
     severity: warn
     given: '#CreateOperationObject'
@@ -129,5 +134,5 @@ rules:
       function: 'IPA106ValidOperationID'
       functionOptions:
         methodName: 'create'
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-107.yaml b/tools/spectral/ipa/rulesets/IPA-107.yaml
index c720a20141..0f4f377999 100644
--- a/tools/spectral/ipa/rulesets/IPA-107.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-107.yaml
@@ -123,6 +123,11 @@ rules:
       Rule checks for the following conditions:
         - Applies only to PUT/PATCH methods that are not [custom methods](https://mongodb.github.io/ipa/109)
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+
+      ##### Configuration
+      This rule includes two configuration options:
+        - `methodName`: The verb to be used in the OperationIds
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-107-valid-operation-id'
     severity: warn
     given: '#UpdateOperationObject'
@@ -130,5 +135,5 @@ rules:
       function: 'IPA107ValidOperationID'
       functionOptions:
         methodName: 'update'
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/IPA-108.yaml b/tools/spectral/ipa/rulesets/IPA-108.yaml
index 6d1de08bd9..78f3977977 100644
--- a/tools/spectral/ipa/rulesets/IPA-108.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-108.yaml
@@ -64,6 +64,10 @@ rules:
       Rule checks for the following conditions:
         - Applies only to DELETE methods that are not [custom methods](https://mongodb.github.io/ipa/109)
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+      ##### Configuration
+      This rule includes two configuration options:
+        - `methodName`: The verb to be used in the OperationIds
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-108-valid-operation-id'
     severity: warn
     given: '#DeleteOperationObject'
@@ -71,7 +75,7 @@ rules:
       function: 'IPA108ValidOperationID'
       functionOptions:
         methodName: 'delete'
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
 
 functions:
diff --git a/tools/spectral/ipa/rulesets/IPA-109.yaml b/tools/spectral/ipa/rulesets/IPA-109.yaml
index a1f052fa46..08b72e8509 100644
--- a/tools/spectral/ipa/rulesets/IPA-109.yaml
+++ b/tools/spectral/ipa/rulesets/IPA-109.yaml
@@ -70,11 +70,15 @@ rules:
       Rule checks for the following conditions:
         - Applies only to paths containing custom method identifiers (with colon format)
         - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+
+      ##### Configuration
+      This rule includes one configuration options:
+        - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
     message: '{{error}} https://mdb.link/mongodb-atlas-openapi-validation#xgen-IPA-109-valid-operation-id'
     severity: warn
     given: '$.paths[*][*]'
     then:
       function: 'IPA109ValidOperationID'
       functionOptions:
-        ignoreList:
+        ignorePluralizationList:
           - 'Fts'
diff --git a/tools/spectral/ipa/rulesets/README.md b/tools/spectral/ipa/rulesets/README.md
index d97328faef..c61ec2b66e 100644
--- a/tools/spectral/ipa/rulesets/README.md
+++ b/tools/spectral/ipa/rulesets/README.md
@@ -154,6 +154,11 @@ Rule checks for the following conditions:
   - Applies only to GET methods on single resources or singleton resources
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
 
+##### Configuration
+This rule includes two configuration options:
+  - `methodName`: The verb to be used in the OperationIds
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
+
 
 
 ### IPA-105
@@ -220,6 +225,11 @@ Rule checks for the following conditions:
   - Ignores singleton resources
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
 
+##### Configuration
+This rule includes two configuration options:
+  - `methodName`: The verb to be used in the OperationIds
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
+
 
 
 ### IPA-106
@@ -311,6 +321,11 @@ Rule checks for the following conditions:
   - Applies only to POST methods that are not [custom methods](https://mongodb.github.io/ipa/109)
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
 
+##### Configuration
+This rule includes two configuration options:
+  - `methodName`: The verb to be used in the OperationIds
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
+
 
 
 ### IPA-107
@@ -394,6 +409,11 @@ Rule checks for the following conditions:
   - Applies only to PUT/PATCH methods that are not [custom methods](https://mongodb.github.io/ipa/109)
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
 
+##### Configuration
+This rule includes two configuration options:
+  - `methodName`: The verb to be used in the OperationIds
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
+
 
 
 ### IPA-108
@@ -448,6 +468,10 @@ The noun(s) in the Operation ID should be the collection identifiers from the re
 Rule checks for the following conditions:
   - Applies only to DELETE methods that are not [custom methods](https://mongodb.github.io/ipa/109)
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
+##### Configuration
+This rule includes two configuration options:
+  - `methodName`: The verb to be used in the OperationIds
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
 
 
 
@@ -509,6 +533,10 @@ Rule checks for the following conditions:
   - Applies only to paths containing custom method identifiers (with colon format)
   - Confirms that the existing OperationId is compliant with generated IPA Compliant OperationId
 
+##### Configuration
+This rule includes one configuration options:
+  - `ignorePluralizationList`: Words that are allowed to maintain their assumed plurality (e.g., "Fts")
+
 
 
 ### IPA-110
diff --git a/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
index caa61ead91..370dd963ef 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA104ValidOperationID.js
@@ -6,7 +6,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-104-valid-operation-id';
 
-export default (input, { methodName, ignoreList }, { path, documentInventory }) => {
+export default (input, { methodName, ignorePluralizationList }, { path, documentInventory }) => {
   const resourcePath = path[1];
   const oas = documentInventory.resolved;
   const resourcePaths = getResourcePathItems(resourcePath, oas.paths);
@@ -23,7 +23,7 @@ export default (input, { methodName, ignoreList }, { path, documentInventory })
     if (hasMethodVerbOverride(input, methodName)) {
       methodName = input[VERB_OVERRIDE_EXTENSION].verb;
     }
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignorePluralizationList);
 
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
diff --git a/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
index 749b786bed..566b833a90 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA105ValidOperationID.js
@@ -6,7 +6,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-105-valid-operation-id';
 
-export default (input, { methodName, ignoreList }, { path, documentInventory }) => {
+export default (input, { methodName, ignorePluralizationList }, { path, documentInventory }) => {
   const resourcePath = path[1];
   const oas = documentInventory.resolved;
   const resourcePaths = getResourcePathItems(resourcePath, oas.paths);
@@ -24,7 +24,7 @@ export default (input, { methodName, ignoreList }, { path, documentInventory })
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignorePluralizationList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
index e8d41f1f4a..6a2157997b 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA106ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-106-valid-operation-id';
 
-export default (input, { methodName, ignoreList }, { path }) => {
+export default (input, { methodName, ignorePluralizationList }, { path }) => {
   const resourcePath = path[1];
 
   if (hasCustomMethodOverride(input) || isCustomMethodIdentifier(resourcePath)) {
@@ -17,7 +17,7 @@ export default (input, { methodName, ignoreList }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignorePluralizationList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
index 1a0f50d17e..c539793af9 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA107ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-107-valid-operation-id';
 
-export default (input, { methodName, ignoreList }, { path }) => {
+export default (input, { methodName, ignorePluralizationList }, { path }) => {
   const resourcePath = path[1];
 
   if (isCustomMethodIdentifier(resourcePath) || hasCustomMethodOverride(input)) {
@@ -17,7 +17,7 @@ export default (input, { methodName, ignoreList }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignorePluralizationList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
index d223c50660..0739fb338d 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA108ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-108-valid-operation-id';
 
-export default (input, { methodName, ignoreList }, { path }) => {
+export default (input, { methodName, ignorePluralizationList }, { path }) => {
   const resourcePath = path[1];
 
   if (isCustomMethodIdentifier(resourcePath) || hasCustomMethodOverride(input)) {
@@ -17,7 +17,7 @@ export default (input, { methodName, ignoreList }, { path }) => {
   }
 
   try {
-    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, resourcePath, input, path, ignorePluralizationList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js b/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
index 480f6ee697..fc798a334c 100644
--- a/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
+++ b/tools/spectral/ipa/rulesets/functions/IPA109ValidOperationID.js
@@ -5,7 +5,7 @@ import { validateOperationIdAndReturnErrors } from './utils/validations/validate
 
 const RULE_NAME = 'xgen-IPA-109-valid-operation-id';
 
-export default (input, { ignoreList }, { path }) => {
+export default (input, { ignorePluralizationList }, { path }) => {
   const resourcePath = path[1];
 
   if (!isCustomMethodIdentifier(resourcePath) && !hasCustomMethodOverride(input)) {
@@ -28,7 +28,7 @@ export default (input, { ignoreList }, { path }) => {
       return;
     }
 
-    const errors = validateOperationIdAndReturnErrors(methodName, endpointUrl, input, path, ignoreList);
+    const errors = validateOperationIdAndReturnErrors(methodName, endpointUrl, input, path, ignorePluralizationList);
     return evaluateAndCollectAdoptionStatus(errors, RULE_NAME, input, path);
   } catch (e) {
     return handleInternalError(RULE_NAME, path, e);
diff --git a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
index 7dfb853d1b..5471455677 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/operationIdGeneration.js
@@ -10,7 +10,7 @@ const CAMEL_CASE_WITH_ABBREVIATIONS = /[A-Z]+(?![a-z])|[A-Z]*[a-z]+/g;
  * @param method the standard method name (create, update, get etc.), custom method name, or empty string (only for legacy custom methods)
  * @param path the path for the endpoint
  */
-export function generateOperationID(method, path, ignoreList = []) {
+export function generateOperationID(method, path, ignorePluralizationList = []) {
   if (!path) {
     return method;
   }
@@ -40,7 +40,7 @@ export function generateOperationID(method, path, ignoreList = []) {
 
   let opID = verb;
   for (let i = 0; i < nouns.length - 1; i++) {
-    opID += singularize(nouns[i], ignoreList);
+    opID += singularize(nouns[i], ignorePluralizationList);
   }
 
   // singularize final noun, dependent on resource identifier - leave custom nouns alone
@@ -49,7 +49,7 @@ export function generateOperationID(method, path, ignoreList = []) {
       !camelCaseCustomMethod) ||
     verb === 'create'
   ) {
-    nouns[nouns.length - 1] = singularize(nouns[nouns.length - 1], ignoreList);
+    nouns[nouns.length - 1] = singularize(nouns[nouns.length - 1], ignorePluralizationList);
   }
 
   opID += nouns.pop();
@@ -93,8 +93,8 @@ function capitalize(val) {
   return String(val).charAt(0).toUpperCase() + String(val).slice(1);
 }
 
-function singularize(noun, ignoreList = []) {
-  if (!ignoreList.includes(noun)) {
+function singularize(noun, ignorePluralizationList = []) {
+  if (!ignorePluralizationList.includes(noun)) {
     return inflection.singularize(noun);
   }
   return noun;
diff --git a/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js b/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
index 643bce889c..daa7b1cb9d 100644
--- a/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
+++ b/tools/spectral/ipa/rulesets/functions/utils/validations/validateOperationIdAndReturnErrors.js
@@ -18,9 +18,15 @@ const TOO_LONG_OP_ID_ERROR_MESSAGE =
  * @param path the path to the operation object being evaluated, used for error reporting with Spectral.
  * @returns {[{path: string[], message: string}]} an array of error objects, each containing a path and a message, or an empty array if no errors are found.
  */
-export function validateOperationIdAndReturnErrors(methodName, resourcePath, operationObject, path, ignoreList) {
+export function validateOperationIdAndReturnErrors(
+  methodName,
+  resourcePath,
+  operationObject,
+  path,
+  ignorePluralizationList
+) {
   const operationId = operationObject.operationId;
-  const expectedOperationId = generateOperationID(methodName, resourcePath, ignoreList);
+  const expectedOperationId = generateOperationID(methodName, resourcePath, ignorePluralizationList);
 
   const operationIdPath = path.concat(['operationId']);