Diagnosis
For the current contract, the last &V1& was performed up to &V2&.
If the field being changed is the rental start date or the date of thefirst debit position, then it is no longer possible to change this fieldonce settlement (service charge settlement or sales-based settlement)has been performed.
If the field being changed is within the conditions, then the field canbe changed after &V2& at the earliest. Create a new item in that case.