SAP Message RP357 - First payment date &1 must fall within validitiy time period of record

Diagnosis
The first payment date must come within the validity period of therecord. It would not make sense to enter anything else. The record isvalid from &V2& to &V3&, the payment date id &V1&. It therefore doesnot come within the validity period.

System Response
The entry is not allowed.

Procedure
Check your entry and correct either the validity period or the paymentdate.