SAP Message 56146 - Trip data for the period from &1 &2 to &3 &4 already exists

Diagnosis
You want to create a travel request, a travel plan or an expense report.

System Response
The system informs you that trip data has already been entered for thistime period. It is only possible in exceptional cases
to create more than one trip in the same or overlapping time periods.

Procedure
You may have already entered a travel request, travel plan or expensereport for this time period and only want to add to it. In this case,select the object you want to make additions to (travel request, travelplan or expense report) in the list of trips and choose the functionagain.