Issue Updating Metafield Value via Shopify GraphQL Admin API

[Sufi879]

I'm using the Shopify GraphQL Admin API to update a metafield, but I'm encountering an issue where the value doesn't get updated if the metafield already has an existing value. Has anyone experienced this or know how to resolve it?

[BSSCommerce-B2B]

Hi @Sufi879,

Can you try again with a different return in your query? As I can see, you are returning only one metafield, try this instead and find you metafield id in response.

metafields(first: 10) {
        edges {
          node {
            id
            namespace
            key
            value
          }
        }
      }

And let I see the result so I can detect more about your issue (if the metafield you are trying to update not shown)

[Sufi879]

Hi @BSSCommerce-B2B ,

Actually I'm returning the metafield related to this product 

mutation {

  productUpdate(input: {id: "gid://shopify/Product/7625814081647", metafields: [

      {

        id: "gid://shopify/Metafield/34199076975",

        namespace: "custom",

        key: "product_group",

        value: "X"

      }

    ]}) {

    product {

      id

      metafield(namespace:"custom",key:"product_group")

      {

        value

      }

    }

  }

}
and I have also check the value from store front it is not updating if there is an existing value in the field it only updates when the field is empty