SAP Message CACSRI012 - Error while determining the last calculation data; see long text

Diagnosis
The system could not determine the last calculation date. In previousruns, different period rules were found for the currently used periodrule &V1&.
Since period rules represent different periodicities, multiplecalculations of the process were performed for time periods of differentlengths.

System Response
Processing of the commission contract cannot be continued forconsistency reasons.

Procedure
Check the commission contract and Customizing.