Not getting response back on calling "Fulfill line items without a tracking number" API.

Retired Boards Appdev Fulfillment Api

Topic summary

A developer is experiencing issues with the “Fulfill line items without a tracking number” REST API endpoint—specifically receiving no response when making API calls.

Root Cause Identified:

  • The developer is using API version 2021-01, which has been deprecated for over 2 years
  • Calls are automatically falling back to version 2022-04 (the last supported version before current standards)
  • The deprecated endpoint structure is causing the lack of response

Recommended Solution:

  • Upgrade to API version 2023-04 to resolve the issue
  • Use the current fulfillment API documentation and endpoints
  • This upgrade will handle most of the required work and ensure compatibility with supported API versions

The issue remains unresolved pending the developer’s migration to the newer API version.

Summarized with AI on November 19. AI used: claude-sonnet-4-5-20250929.
1

When creating a “Fulfill line items without a tracking number” via the rest API for several. I’m not getting any response back

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and I am using https://help.shopify.com/en/api/reference/shipping-and-fulfillment/fulfillment this API

2

Hi Tony,

Sorry to disappoint you but you are not using the API located at that link. The api you are using is deprecated for over 2 years now. 2021-01 is no longer supported, which means your calls fall back to 2022-04, which is the last supported api version.

https://shopify.dev/docs/api/admin-rest/2022-04/resources/fulfillment#post-fulfillments

You should really upgrade to 2023-04 to have the most out of the work you are about to do.

Cheers,

Gary