Diagnosis
The date you have entered for the start of the employee's maternity payperiod (MPP) is not within the MPP start possible from periodcalculated by the system.

System Response
If the date you have entered is earlier than the MPP start possiblefrom date, the system does not allow this entry. However, if thedate is later than the MPP start possible from 'to' date, thesystem issues a warning but does allow the entry.

Procedure
Check the date you have entered is correct.