The production versions of the reference material have not been adopted

What causes this issue?

You have created material requirements planning (MRP) data using a
reference material. However, the production versions proposed from the
reference material have not been adopted since you did not check them
by choosing <LS>Versions</>.

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?

Display the proposed production versions and check whether you want to
adopt them.

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.