Not able to modify Personnel area through PA40 action

Dear Experts,

I am trying to change the personnel area through PA40

First the Personnel area modifcation is accepting in IT000 and its errored in IT0001 screen.

Error Message

Sequence number not permitted

Message no. PBAS_SERVICE004

Diagnosis

You attempted to create a data record with sequence number for infotype 0006 subtype 1. It is, however, not permitted to use a sequence number for this combination.

System Response

The operation cannot be performed.

Procedure

Create data records without sequence numbers only.

Procedure for System Administration

You are only permitted to use a sequence number if the infotype or subtype has time constraint "3". If you expressly want to use sequence numbers, you must adjust the system settings for the infotype