Diagnosis
The travel request/trip has a trip status for which an approvalis not supported.

System Response
The following approval statuses are supported:
'Request entered' is set at 'request approved'
'Request on hold' is set at 'request approved'
'Request approved' is set at 'request approved'
'Trip taken' is set at 'trip approved'
'Trip on hold' is set at 'trip approved'
'Trip approved' is set at 'trip approved'
Accounting status must 'open', 'to be accounted' or 'cancelled'.

Procedure
Maintain trip status via change trip data.