Error inserting a new F/R Mat. in table WRF_FOLUP_TYP_A

What causes this issue?

An error occurred when adding a new follow-up/replacement material
relationship to table WRF_FOLUP_TYP_A. The system did not save the
follow-up/replacement material relationship.

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?

INCLUDE ISR_SYSTEMFEHLER

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.