Error updating table WRF_FOLUP_TYP_A

What causes this issue?

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

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.