For many countries, the beginning of a new year is related to changes in legal requirements – in case of travel management these changes most often refer to new per-diem rates for meal, accommodation and mileage.
You are running a SAP standard trip provision variant and need to update the per-diem tables?
Just check SAP note 1911364.
You are missing your country version in the note but you have been informed of new per-diem rates?
Contact SAP Support directly.