MDVA-43862: customer can't update cart items because of a GraphQL UpdateCartItems mutation error

The MDVA-43862 patch solves the issue where the customer can't update cart items because of a GraphQL UpdateCartItems mutation error. This patch is available when the Quality Patches Tool (QPT) 1.1.13 is installed. The patch ID is MDVA-43862. Please note that the issue is scheduled to be fixed in Adobe Commerce 2.4.5.

Affected products and versions

The patch is created for Adobe Commerce version:

• Adobe Commerce (all deployment methods) 2.4.3-p1, 2.4.2-p2

Compatible with Adobe Commerce versions:

• Adobe Commerce (all deployment methods) 2.3.3 - 2.4.4

Issue

The customer can't update cart items because of a GraphQL UpdateCartItems mutation error.

Steps to reproduce:

1. Create a configurable product (MH01) by assigning one simple (MH01-XL-Gray).

2. Go to the Commerce Admin > Catalog > Products > SKU > MH01 > Customizable Options.

3. Add a custom option to the product.

   • Option Title: Option1
   • Option Type: Field
   • Required: Yes
   • Price: 10.00
   • Price Type: Fixed
   • SKU: MHC1
   • Max Characters: 25

4. Run the below GraphQL query to generate cart ID.

   mutation {
     createEmptyCart
   }
   

5. Make a note of the cart ID code.

6. Run the below query to add configurable product to the cart:

   mutation {
   addConfigurableProductsToCart(
   input: {
       cart_id: "<cart ID from above step>",
       cart_items: [{
       parent_sku: "MH01",
       data: {
           quantity: 1,
           sku: "MH01-XL-Gray"
           },
           customizable_options: {
               id: 1,
               value_string: "2"
               }
           }
       ]
   }
   )
   {
   cart {
     items {
       uid
       quantity
       product {
         name
         sku
       }
       ... on ConfigurableCartItem {
         configurable_options {
           option_label
         }
       }
     }
   }
   }
   }
   

7. You will notice that the cart is populated with the configurable item.

8. Make a note of the uid returned.

9. Again, run the below query to update the cart item.

   mutation {
     updateCartItems(
       input: {
         cart_id: "<cart ID from previous step>",
         cart_items: [
           {
             cart_item_uid: "<uid from previous step>"
             quantity: 3,
             customizable_options:[{
                 id: 1,
                 value_string: "67"
             }]
           }
         ]
       }
     ){
       cart {
         items {
           uid
           product {
             name
           }
           quantity
         }
         prices {
           grand_total{
             value
             currency
           }
         }
       }
     }
   }
   

10. Observe the response.

Expected results:

The cart is updated without any issue.

Actual results:

You get the following error:

{
  "errors": [
    {
      "message": "Could not update cart item: You need to choose options for your item.",
      "extensions": {
        "category": "graphql-input"
      },
      "locations": [
        {
          "line": 2,
          "column": 3
        }
      ],
      "path": [
        "updateCartItems"
      ]
    }
  ],
  "data": {
    "updateCartItems": null
  }
}

Apply the patch

To apply individual patches, use the following links depending on your deployment method:

• Adobe Commerce or Magento Open Source on-premises: Software Update Guide > Apply Patches in our developer documentation.
• Adobe Commerce on cloud infrastructure: Upgrades and Patches > Apply Patches in our developer documentation.

Related reading

To learn more about Quality Patches Tool, refer to:

• Quality Patches Tool released: a new tool to self-serve quality patches in our support knowledge base.
• Check if patch is available for your Adobe Commerce issue using Quality Patches Tool in our support knowledge base.

For info about other patches available in QPT, refer to Patches available in QPT in our developer documentation.