GraphQL Admin API- Issue with Setting Metafield Value to an Empty String in productUpdate Mutation

Retired Boards Appdev Merchandising
,
1

Hi,

I’m encountering an issue while trying to update a product’s metafield using the productUpdate mutation in the Shopify API. The metafield currently has a value, and I would like to set it to an empty string (‘value’: ‘’). However, when I run the mutation, the metafield does not update to reflect the empty value.

Here’s the mutation I’m using:

mutation productUpdate($input: ProductInput!) {
  productUpdate(input: $input) {
    product {
      id
      metafields(first: 15) {
        edges {
          node {
            id
            namespace
            key
            value
          }
        }
      }
    }
    userErrors {
      field
      message
    }
  }
}

For the input, I’ve set the metafield like this:

{
  "id": "gid://shopify/Product/XXXX",
  "metafields": [
    {
      "id": "gid://shopify/Metafield/YYYY",
      "namespace": "namespace",
      "key": "key",
      "value": ""
    }
  ]
}

The mutation runs successfully, but the metafield doesn’t update to an empty string as intended. The metafield currently has a value, and I need to clear it. Is there a specific approach for setting a metafield’s value to an empty string?

Any help or guidance on how to achieve this would be greatly appreciated!

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