SAP Message 5R045 - Invalid start date &1 - This FW type/subtype is valid from &2.

Diagnosis
The infotype start date falls within Foreign Worker Levy (FWL) validperiod.

System Response
This will cause an error when payroll is run.

Procedure
Check that the infotype start date does not fall within the FWL validperiod.
(Refer to table T5R1E)