Thanks Osman, As you said if i remove the Append = 'X' i am not getting the header details in the file .
Actually in my case i am using the FM GUI_Download for Header first and then using the same FM for data in that case i need to append both Header and data in the same file..
As i observed that the only way we can use FM (GUI_DOWNLOAD) for header and data without passing Append = 'x'.
Thanks,
Balu
