&: & WM stock transfer (from material) exists

What causes this issue?

A (warehouse management) stock transfer document still exists for the
material.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Delete the WM stock transfer document for the material.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.