SAP Message CACSFLATTD029 - Calculation date &1 is after/same as end date &2 of agreement &3

Diagnosis
The current calculation date &V1& is after or the same as the end dateV2 of the flat rate agreement v3.

System Response
No flat rate can be calculated for theperiod. Processing offlat-rate agreement &V3& has been terminated by the flat-rate process.

Procedure
Check the individual flat-rate agreement &V3& of the commissioncontract.