How to come out of loop at last record?

Question

As I told in my previous posts,Iam transferring data from excel to zgkmaster tabel
table structure:
eid
ename
First I did SHDB(recording) and then made my BDC program.There are 10 records in table with names gopi,hari,rajesh.... with eid 1 to 10.My task is to updated all these names to 'XXX' for all 10 records (just for simple purpose).In my program I called 'Call transaction 'se11' using ptable mode 'A'.I moved from first screen to last screen (where you will update XXX and save for each record').Here:
Loop at ptable into otable
perform screens using <program name> <number> 'X'
perform fields using zgkmaster-ename , otable-ename
perform fields using 'BDC_OKCODE' , 'SAVE'
perform screens using <program name> <number> 'X'
perform fields using 'BDC_OKCODE' , 'NEXT'
endloop.
This code works fine in 'A' mode,but at last record a message comes 'Function code cannot be selected' (i think 'next' cannot be executed as it is last record) but all records are updated.
When the mode is changed to 'N' and 'E',nothing is saved and the same error 'Function code cannot be selected'.Due the this error whatever data we give before that is not saving into table,may be due to this error.
Now how shoud i make the loop exit when it reaches last record,i tried even with hardcording
if sy-index = 10.
leave prograam'
endif.
perform.....'NEXT' statement
But the program is not exiting,I dont know why?Can anyone help me,I think if i made the loop to exit before next statement for last record that error will not occur.advise me if anything wrong.
Thanks in advance
The problem is that
endloop

Answer 1

Hi..
1. To Terminate the LOOP in Last record.
    LOOP AT ITAB.
        << PROCESSING LOGIC>>
         AT LAST.
           EXIT.
         ENDAT.
    ENDLOOP.
2. It is necessary to Declare the Internal table with same structure as the Excel file
3. It is not necessary to call the Screen Explicitly before filling the BDCDATA record.
    If you want to process the Screen Twice the Fill the SAME SCREEN twice in BDCDATA Table and set the DYNBEGIN = 'X' in both the cases.
REWARD IF HELPFUL.