Shopify B2B orderEditBegin 'The order cannot be edited' issues

Shopify Plus

Topic summary

Issue: In a new B2B pre-production Shopify Plus store, some orders are increasingly failing the GraphQL orderEditBegin mutation with the error “The order cannot be edited,” while two existing production B2B stores perform the same edits without issue.

Context: Edits are part of an order edit app used to keep Shopify and an ERP (enterprise resource planning) system synchronized. Support suggested failures occur when items are already fulfilled, but the poster cites production examples where fulfilled-item orders are editable, and notes the failing and succeeding orders have similar statuses.

Details provided: Example x-request-ids were shared for both a failed and a successful call.

Request: Clear documentation on the conditions/limitations that block orderEditBegin for B2B orders, especially around fulfillment status and other possible constraints.

Status: Unresolved; guidance needed before go-live to ensure reliable order history synchronization.

Summarized with AI on December 24. AI used: gpt-5.
1

Currently we are running 2 production B2B store, with 2 more coming online in the near future. Our active 2 stores are running fine with our order edit application. Our next go live store is running in pre-production, meaning product updates, order edits etc are running as if it were production.

We are having an issue with this new store with some (increasing number of order) order trying to use the graphql orderEditBegin mutation. Plus support was not able to give much help, however did bring up the issue was because items on the orders were already marked as fulfilled, this cannot be the case as I find examples from our current production stores with this scenario and no issue’s updating said orders.

If there is a limitation, does anyone know what the conditions are?

Unsuccessful orderEditBegin x-request-id: c36c7062-1461-4e55-9324-7aca89db2aac-1721150993

Successful orderEditBegin x-request-id: 61dd7cba-a13d-4b6f-a9a4-89df6db1daf9-1721151316

Both similiar order status’

Need some guidance before go live as we require to have a synchronized order history for our customers between Shopify and our ERP.

thanks.