Error getting order item coupon code for customer order via GraphQl customer request

[zakdma]

Preconditions and environment

Magento 2.4.8

Steps to reproduce

1. Create a simple product, customer, sales rule with a coupon, and place an order using this customer and applying coupon.
2. Get customer token via GraphQL query generateCustomerToken
3. Issue GraphQL request

query {
  customer {
    firstname
    lastname
    orders {
      items {
        order_number
        status
        items {
          product_sku
          discounts {
            coupon {
              code
            }
            amount {
              value
            }
          }
        }
      }
      page_info {
        current_page
        page_size
        total_pages
      }
      total_count
    } 
  }
}

Expected result

There is a correct response from GraphQl with orders and order items discount data

Actual result

There is an error: "discount_model" value should be specified

exception.log:

[2025-06-05T07:21:43.918952+00:00] main.ERROR: "discount_model" value should be specified

GraphQL (28:13)
27:           discounts {
28:             coupon {
                ^
29:               code
 {"exception":"[object] (GraphQL\\Error\\Error(code: 0): \"discount_model\" value should be specified at /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Error/Error.php:155)
[previous exception] [object] (Magento\\Framework\\Exception\\LocalizedException(code: 0): \"discount_model\" value should be specified at /home/zak/sites/magento/storefront/public/vendor/magento/module-sales-rule-graph-ql/Model/Resolver/Coupon.php:40)"} []
[2025-06-05T07:21:43.919095+00:00] main.ERROR: Magento\Framework\Exception\LocalizedException: "discount_model" value should be specified in /home/zak/sites/magento/storefront/public/vendor/magento/module-sales-rule-graph-ql/Model/Resolver/Coupon.php:40
Stack trace:
#0 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(58): Magento\SalesRuleGraphQl\Model\Resolver\Coupon->resolve()
#1 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(138): Magento\SalesRuleGraphQl\Model\Resolver\Coupon\Interceptor->___callParent()
#2 /home/zak/sites/magento/storefront/public/vendor/magento/module-graph-ql-resolver-cache/Model/Plugin/Resolver/Cache.php(212): Magento\SalesRuleGraphQl\Model\Resolver\Coupon\Interceptor->Magento\Framework\Interception\{closure}()
#3 /home/zak/sites/magento/storefront/public/vendor/magento/module-graph-ql-resolver-cache/Model/Plugin/Resolver/Cache.php(128): Magento\GraphQlResolverCache\Model\Plugin\Resolver\Cache->executeResolver()
#4 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(135): Magento\GraphQlResolverCache\Model\Plugin\Resolver\Cache->aroundResolve()
#5 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(153): Magento\SalesRuleGraphQl\Model\Resolver\Coupon\Interceptor->Magento\Framework\Interception\{closure}()
#6 /home/zak/sites/magento/storefront/public/generated/code/Magento/SalesRuleGraphQl/Model/Resolver/Coupon/Interceptor.php(23): Magento\SalesRuleGraphQl\Model\Resolver\Coupon\Interceptor->___callPlugins()
#7 /home/zak/sites/magento/storefront/public/vendor/magento/framework/GraphQl/Query/Resolver/PromiseFactory.php(63): Magento\SalesRuleGraphQl\Model\Resolver\Coupon\Interceptor->resolve()
#8 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(714): Magento\Framework\GraphQl\Query\Resolver\PromiseFactory->Magento\Framework\GraphQl\Query\Resolver\{closure}()
#9 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(631): GraphQL\Executor\ReferenceExecutor->resolveFieldValueOrError()
#10 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1317): GraphQL\Executor\ReferenceExecutor->resolveField()
#11 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1256): GraphQL\Executor\ReferenceExecutor->executeFields()
#12 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1210): GraphQL\Executor\ReferenceExecutor->collectAndExecuteSubfields()
#13 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(893): GraphQL\Executor\ReferenceExecutor->completeObjectValue()
#14 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(753): GraphQL\Executor\ReferenceExecutor->completeValue()
#15 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(985): GraphQL\Executor\ReferenceExecutor->completeValueCatchingError()
#16 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(871): GraphQL\Executor\ReferenceExecutor->completeListValue()
#17 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(753): GraphQL\Executor\ReferenceExecutor->completeValue()
#18 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(640): GraphQL\Executor\ReferenceExecutor->completeValueCatchingError()
#19 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1317): GraphQL\Executor\ReferenceExecutor->resolveField()
#20 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1256): GraphQL\Executor\ReferenceExecutor->executeFields()
#21 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1210): GraphQL\Executor\ReferenceExecutor->collectAndExecuteSubfields()
#22 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(1074): GraphQL\Executor\ReferenceExecutor->completeObjectValue()
#23 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(888): GraphQL\Executor\ReferenceExecutor->completeAbstractValue()
#24 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/ReferenceExecutor.php(750): GraphQL\Executor\ReferenceExecutor->completeValue()
#25 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/Promise/Adapter/SyncPromise.php(152): GraphQL\Executor\ReferenceExecutor->GraphQL\Executor\{closure}()
#26 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/Promise/Adapter/SyncPromise.php(50): GraphQL\Executor\Promise\Adapter\SyncPromise->GraphQL\Executor\Promise\Adapter\{closure}()
#27 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/Executor/Promise/Adapter/SyncPromiseAdapter.php(144): GraphQL\Executor\Promise\Adapter\SyncPromise::runQueue()
#28 /home/zak/sites/magento/storefront/public/vendor/webonyx/graphql-php/src/GraphQL.php(108): GraphQL\Executor\Promise\Adapter\SyncPromiseAdapter->wait()
#29 /home/zak/sites/magento/storefront/public/vendor/magento/framework/GraphQl/Query/QueryProcessor.php(91): GraphQL\GraphQL::executeQuery()
#30 /home/zak/sites/magento/storefront/public/vendor/magento/module-graph-ql/Controller/GraphQl.php(202): Magento\Framework\GraphQl\Query\QueryProcessor->process()
#31 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(58): Magento\GraphQl\Controller\GraphQl->dispatch()
#32 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(138): Magento\GraphQl\Controller\GraphQl\Interceptor->___callParent()
#33 /home/zak/sites/magento/storefront/public/vendor/magento/module-page-cache/Model/App/FrontController/BuiltinPlugin.php(72): Magento\GraphQl\Controller\GraphQl\Interceptor->Magento\Framework\Interception\{closure}()
#34 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(135): Magento\PageCache\Model\App\FrontController\BuiltinPlugin->aroundDispatch()
#35 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(153): Magento\GraphQl\Controller\GraphQl\Interceptor->Magento\Framework\Interception\{closure}()
#36 /home/zak/sites/magento/storefront/public/generated/code/Magento/GraphQl/Controller/GraphQl/Interceptor.php(23): Magento\GraphQl\Controller\GraphQl\Interceptor->___callPlugins()
#37 /home/zak/sites/magento/storefront/public/vendor/magento/framework/App/Http.php(116): Magento\GraphQl\Controller\GraphQl\Interceptor->dispatch()
#38 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(58): Magento\Framework\App\Http->launch()
#39 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(138): Magento\Framework\App\Http\Interceptor->___callParent()
#40 /home/zak/sites/magento/storefront/public/vendor/magento/module-application-performance-monitor/Plugin/ApplicationPerformanceMonitor.php(38): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#41 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(135): Magento\ApplicationPerformanceMonitor\Plugin\ApplicationPerformanceMonitor->aroundLaunch()
#42 /home/zak/sites/magento/storefront/public/vendor/magento/framework/Interception/Interceptor.php(153): Magento\Framework\App\Http\Interceptor->Magento\Framework\Interception\{closure}()
#43 /home/zak/sites/magento/storefront/public/generated/code/Magento/Framework/App/Http/Interceptor.php(23): Magento\Framework\App\Http\Interceptor->___callPlugins()
#44 /home/zak/sites/magento/storefront/public/vendor/magento/framework/App/Bootstrap.php(264): Magento\Framework\App\Http\Interceptor->launch()
#45 /home/zak/sites/magento/storefront/public/pub/index.php(30): Magento\Framework\App\Bootstrap->run()
#46 {main} {"exception":"[object] (Magento\\Framework\\Exception\\LocalizedException(code: 0): \"discount_model\" value should be specified at /home/zak/sites/magento/storefront/public/vendor/magento/module-sales-rule-graph-ql/Model/Resolver/Coupon.php:40)"} []

Additional information

There is a related bug #39841 that has been fixed. It fixes a similar case, but not this one.

Release note

No response

Triage and priority

• Severity: S0 - Affects critical data or functionality and leaves users without workaround.
• Severity: S1 - Affects critical data or functionality and forces users to employ a workaround.
• Severity: S2 - Affects non-critical data or functionality and forces users to employ a workaround.
• Severity: S3 - Affects non-critical data or functionality and does not force users to employ a workaround.
• Severity: S4 - Affects aesthetics, professional look and feel, “quality” or “usability”.

[m2-assistant]

Hi @zakdma. Thank you for your report.
To speed up processing of this issue, make sure that the issue is reproducible on the vanilla Magento instance following Steps to reproduce.

• For more details, review the Magento Contributor Assistant documentation.
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[m2-assistant]

Hi @engcom-Bravo. Thank you for working on this issue.
In order to make sure that issue has enough information and ready for development, please read and check the following instruction: 👇

• 1. Verify that issue has all the required information. (Preconditions, Steps to reproduce, Expected result, Actual result).
• 2. Verify that issue has a meaningful description and provides enough information to reproduce the issue.
• 3. Add Area: XXXXX label to the ticket, indicating the functional areas it may be related to.
• 4. Verify that the issue is reproducible on 2.4-develop branch
  Details

  - If the issue is reproducible on 2.4-develop branch, please, add the label Reproduced on 2.4.x.
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[zakdma]

Related issues

• Error getting order item discounts applied_to for customer order via GraphQl customer request #39963
• Cannot return null for non-nullable field \"AppliedCoupon.code\" unexpected issue #39841

[engcom-Bravo]

Hi @zakdma,

Thanks for your reporting and collaboration.

Can we close one of the issue looks like both are similar can you please confirm.

Thanks.

[zakdma]

Hi @zakdma,

Thanks for your reporting and collaboration.

Can we close one of the issue looks like both are similar can you please confirm.

Thanks.

Hey, @engcom-Bravo
Please do not close any, they are different issues, but regarding the same functionality.

[engcom-Bravo]

Hi @zakdma,

Thanks for your Update.

We have tried to reproduce the issue in Latest 2.4-develop instance and we are able to reproduce the issue.Kindly refer the screenshots.

[2025-06-06T08:30:45.865491+00:00] main.ERROR: "discount_model" value should be specified

GraphQL (12:13)
11:           discounts {
12:             coupon {
                ^
13:               code
 {"exception":"[object] (GraphQL\\Error\\Error(code: 0): \"discount_model\" value should be specified at /usr/local/var/www/magentok/magento2/vendor/webonyx/graphql-php/src/Error/Error.php:170)
[previous exception] [object] (Magento\\Framework\\Exception\\LocalizedException(code: 0): \"discount_model\" value should be specified at /usr/local/var/www/magentok/magento2/app/code/Magento/SalesRuleGraphQl/Model/Resolver/Coupon.php:40)"} []

There is an error: "discount_model" value should be specified

Hence Confirming the issue.

Thanks.