Field help (HDEMSTA) 

The status of the request is managed manually. The request can have several statuses before it is accepted or rejected. The different statuses can be configured in the local menu 454, but the "Accepted" status must always be the last one of the list.
The user's modification right depends on this status. They can modify a request as long as the status of the request has not exceeded the status defined in the NIVDEM parameter.