SAP Message 5F461 - The dates of 'Fixed amounts' entries can not overlap

Diagnosis
In the 'Fixed amounts' check table, the entries have overlappingvalidity periods.
The validity period for the fixed claim amount is only effective oncethe validity period for another fixed amount has been delimited.

System Response
The system interrupts processing.

Procedure
Check your entries and correct them in such a way that the validityperiods for the fixed amounts do not overlap.