A change in the relevancy for materials planning is not possible

What causes this issue?

You wanted to change the relevancy to materials planning.

System Response

The system resets the entry to its original value.

How to fix this error?

Where necessary, delete the components and recreate them with a
different relevancy to materials planning. It is guaranteed here that
Purchasing or <DS:GLOS.requirements_planning>requirements planning</>
can take into account the altered requirement.

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.