Hi,
I have done the debug and got in to conclusion that if STZU-ALTST field is marked than only alternative Bom no will appear.
in my client in standard it is not updating STZU-ALTST but it is updating through customize program Z progaram .
that is the reason it is not updating the cs15 report.
so closing the thread by updating the Note soft copy in this thread.
Thanks & Regards
Sandeep Kumar Praharaj