Editing previous entry in User Exit

Question

Hello ,
We are using on user exit in HR module to display employee trip data . We have for eg 5 line items in a table control on sap standard TRIP transaction .At runtime user enters data in the table control fields line by line .
When user exit is triggered every entry is processed line be line .
Now based on the 3rd entrie's some field value we need to manipulate the logic of the filed calculation of the
1st line field .
How can we achieve this ? Our problem is 1st line item fields are populated first and displayed so based on 2nd line items field value how can we manipulate first line items fields?

Answer 1

Hello,
According to my understanding move all the line items to one tempary internal table.
When u want to manipulate read the tempararoy internal table and modify the internal table.At the end of the modification move all temp internal table to final internal table.
If it is not solved please provide me one Example of the problem.