SAP Message R$048 - Settlement date in incoming file is missing or not unique

Diagnosis
All file records must have the same settlement date.
Reason: The amounts of all data records are added up and posted as acollective invoice with the parameters and account assignments from themain card. The collective invoice posting date is formed from thesettlement date, which is why it must be clear.

Procedure
Divide data records having different settlement dates into separatecard files.