BOM alternative is used in a different master recipe

What causes this issue?

You have assigned the BOM alternative to a different master recipe
via a production version for the material.

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

System Response

How to fix this error?

If you want to retain this assignment, create a new BOM alternative by
entering a new BOM alternative. The system branches to BOM maintenance.

Error message extract from SAP system. Copyright SAP SE.