Idoc function module problem

Hi all,
I have a idoc. In this Idoc i need to populate a segment which is not populated previously if it satisfies the selection criteria.
For this i have to write a function module and this function module should check theselction and populate this field in Idoc.
Can anyone help me in doing this.
<REMOVED BY MODERATOR>
Regards,
Saroja.
Edited by: Alvaro Tejada Galindo on Jan 31, 2008 11:28 AM

You can hook into a user exit in the IDOC and directly populate the segments at the time the IDOC is created or processed.
The process and user exit to use depends on:
- what IDOC are you using
- is it inbound or outbound
- what are the criteria for the population of the segment
Hope that helps,
Michael

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