Diagnosis
The system was instructed to execute the function module for reading asettlement schedule. The function module _SES_READ foundthat the call was invalid. The settlement schedule that is to be readhas not been specified in full.

Procedure
Possible causes:

• A system error in another location causes an invalid call. Contact your
system administrator.

• Error when the function was called in customer developments. Correct the
call so that at least the creation year and the settlement schedulenumber are specified. If required, you can also include the settlementschedule sequence.