Error deleting an F/R mat. relationship in table WRF_FOLUP_TYP_A

What causes this issue?

An error occurred while deleting a follow-up/replacement material
relationship. The system did not save the deletion of the
follow-up/replacement material relationship in table WRF_FOLUP_TYP_A.

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.