Diagnosis
The banking collective agreement contract stipulates that in the case ofa long-term trip, the per diem for meals shall be reduced by 15%starting with the 91st or 135th third (in the present case, from &V1&)unless there is a letter from the head office that moves this date back.However, there is no provision for moving this date back to before thedate specified in the agreement contract.

System Response
The starting date of the per diem reduction is set to the date of the91st or 135th third of the per diem for meals (in the present case, &V1&
).