How to look for a particular field in the segments of IDOC ?

Hi,

I am looking at a particular IDOC which I will use to do data trasfer from lgacy to R/3 using BAPI in LSMW. Now I know a field which is required to create a given business transaction when igrating data. But there are 100's of segments on the IDOC.

Is there a way I can see if the given field is present in any of the IDOC segment ? I don't want to dig though each and everys egment and find it out...

Regards,

Rajesh