Updating Metafield via Shopify API (406 Error)

Technical Q&A
1

Hello, I am currently working on updating a metafield for our store via the Shopify API, but I am encountering a persistent issue. Specifically, I am receiving a 406 Not Acceptable error when attempting to update a metafield

2

This is Amelia from PageFly - Landing Page Builder App

I will give you some information about this error:

“A 406 Not Acceptable error when working with the Shopify API usually indicates that the server cannot provide a response that matches the criteria specified by the Accept header in your request. This often occurs when there is a mismatch in the expected content type.”

Here are several steps to troubleshoot and resolve the issue when updating a metafield:

  1. Check Content-Type Header:

    • Ensure that you are setting the correct Content-Type header in your request. For updating metafields, it should be application/json.

      Content-Type: application/json

  2. Verify API Endpoint and Method:

    • Make sure you are using the correct API endpoint and HTTP method (usually PUT or POST for updates).

      PUT /admin/api/2023-10/products/{product_id}/metafields/{metafield_id}.json

  3. Correct Request Payload:

    • Ensure your request payload is correctly formatted. Here’s an example of how to update a metafield:

      {
  "metafield": {
    "id": 123456789,
    "namespace": "global",
    "key": "custom_key",
    "value": "new_value",
    "value_type": "string"
  }
}

  4. Include Metafield ID:

    • When updating an existing metafield, you must include the id of the metafield in your request. You can retrieve this ID by making a GET request to the metafields endpoint.

  5. Check for Validation Errors:

    • Ensure that the values you are trying to update comply with any validation rules defined for the metafield. For example, if the metafield expects a string, ensure you are not sending an integer.

  6. Use GraphQL Admin API:

    • If you continue to face issues with the REST API, consider using the GraphQL Admin API, which can sometimes provide more detailed error messages and better handling of metafields.

      mutation {
  metafieldsSet(metafields: [
    {
      ownerId: "gid://shopify/Product/123456789",
      namespace: "global",
      key: "custom_key",
      value: "new_value",
      type: "single_line_text_field"
    }
  ]) {
    metafields {
      id
      key
      value
    }
  }
}

Hope that my solution works for you.

Best regards,

Amelia | PageFly