In-process shop floor BOM version exists

What causes this issue?

An in-process BOM version exists for the shop floor BOM referenced by
the production version

System Response

The in-process BOM version could contain changes you want to incorporate
in the production order

How to fix this error?

Release the shop floor BOM version

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.