SAP Message CACSSESTD123 - Comparing old and new version of settlement schedule

Diagnosis
While performing the remuneration scheduling process step, it maybe necessary to change historic settlement schedules on the basis of newinformation relating to the business object. One of the process steps isto compare the old and new version of the settlement schedule.
Processing takes place as a logical service that is implemented by thetool for settlement scheduling. Method 02 Change SettlementScheduling of object type class 25 is executed. The old and newversions of the settlement schedule are transferred to the logicalservice. The standard delivery of the logical service, method 02,accepts the new settlement schedule and compares items that have alreadybeen converted to settlement items.