In the past some customers were not satisfied with the result of the interest calculation (transaction FPI1 and FPINTM1) for cleared documents. They believe that the interest “To-Date” is not correctly determined for certain FI-CA documents.
For already cleared receivables the interest functionality uses the clearing value date (field DFKKOP-AUGVD) as the interest “To-Date”. But the clearing value date is not filled during the clearing with the account maintenance functionality (transaction FP06 or FPMA) because with the account maintenance it is possible
to clear more than one receivable with more than one credit. Therefore, the interest functionality has to find the best interest “To-Date”. From technical point of view the FI-CA event 2065 calls the function module FKK_GET_VALUEDATE_FOR_INT_CALC if the clearing value date is empty. This function module uses the due date of the item with the highest amount in the clearing process as interest “To-Date”.
With a customer function module for FI-CA event 2065 it is possible to implement your own requirements. More information about this topic is available in KBA 1511725.