If anybody give suggitions please..........
The possibilities for enhancing the fields with Purchase requisition ME51. If it is difficult then workaround would be to configure with ME51N.This is very urgent for me .Please give me reply as early as possible.
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There is no link for step by step for this .
You will have to create screen 111 SAPLXM02 as subscreen and add any custom field you want.
Create a project in CMOD and then assign this MEREQ01 to it and activate . You have other function exits as well as CI_INCLUDES if you want to store custom field data in data base . Please read documentation in SMOD . It has some explanation.
Aslo see this -