SAP Message CACSSESTD115 - Scheduling rule &1 does not permit the change of an existing schedule

Diagnosis
In settlement rescheduling, a settlement schedule can only be changed if
the corresponding version of the scheduling rule has the indicator Existing Settlement Schedule is Changeable.

System Response
In the current case, scheduling rule &SYST-MSGV1& does not permitsubsequent changes. The existing settlement schedule remains unchangedalthough new information may call for settlement of the remuneration tobe rescheduled.