Access data before saving

Hello,

Our maintenance work order creates requisitions for non-stock components. We want that the requisition delivery date be equal to operation end date.

I use userexit COZF0002 to update the requisition but i have a problem to get the operation end date.

When the operation end date is saved no problem, data is stored into afvv-ssedd field but when the work order is re-scheduled, operation date are not saved when the userexit is executed.

Is one of you knows how to access that data before it is saved?

Thanks