The selected pegging relationships were not fixed as desired

What causes this issue?

The system could not fix all pegging relationships. This may be due to
one of the following reasons:
An error occurred in the liveCache during the fixing of a pegging
relationship.
One of the requirements involved is a
<DS:GLOS.D857708F0991D311AE690060B03C9BBE>rapid planning matrix (RPM)</>
requirement. It is not possible to fix pegging relationships for RPM
requirements.

System Response

The system has fixed the pegging relationships in respect of which no
problems occurred.

How to fix this error?

Check whether a pegging relationship involves an RPM 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.