---
title: Fulfillment service callback url is now optional - Shopify developer changelog
description: Shopify’s developer changelog documents all changes to Shopify’s platform. Find the latest news and learn about new platform opportunities.
source_url:
  html: https://shopify.dev/changelog/fulfillment-service-callback-url-is-now-optional
  md: https://shopify.dev/changelog/fulfillment-service-callback-url-is-now-optional.md
---

[Back to Developer changelog](https://shopify.dev/changelog)

October 13, 2025

Tags:

* Admin GraphQL API
* 2026-01

# Fulfillment service callback url is now optional

As of the Admin API version 2026-01, the `callbackUrl` argument in the [fulfillmentServiceCreate](https://shopify.dev/docs/api/admin-graphql/2026-01/mutations/fulfillmentServiceCreate) and [fulfillmentServiceUpdate](https://shopify.dev/docs/api/admin-graphql/2026-01/mutations/fulfillmentServiceUpdate) mutations is now optional.

If your app's fulfillment services do not have a callback URL but have either `inventoryManagement` or `trackingSupport` enabled, they will need to submit the information required by these features via the API.

* For submitting tracking information and handling fulfillment requests, refer to our documentation on [building for Fulfillment Services](https://shopify.dev/docs/apps/build/orders-fulfillment/fulfillment-service-apps/build-for-fulfillment-services).
* For managing inventory quantities, see our documentation on [managing Inventory Quantities and States](https://shopify.dev/docs/apps/build/orders-fulfillment/inventory-management-apps/manage-quantities-states).

### How will this change affect my app?

This is a *non-breaking* change. If your app currently provides a `callbackUrl`, it will continue to function as before. You now have the option to create or update services without a `callbackUrl`.

### What do I need to do?

No action is required for existing apps.

For new apps, you can omit the `callbackUrl` argument when [creating](https://shopify.dev/docs/api/admin-graphql/2026-01/mutations/fulfillmentServiceCreate) or [updating](https://shopify.dev/docs/api/admin-graphql/2026-01/mutations/fulfillmentServiceUpdate) fulfillment services if your operations do not depend on these callbacks.