Hello Arun
The underlying customizing behind demang management is not so simple.
If you are trying to make any change on the customizing, I suggest you to first go through the FAQ and consulting notes listed on the following document:
Demand Management: FAQ and consulting notes
Note 47045, which is listed on this document, provides the following indicator:
If you want to consume planned independent requirements with customer requirements, the consumption indicator (ZUVKZ) of the planning requirements class and the assignment indicator of the customer requirements (VPZUO) in table T459K must be identical.
Regards
Caetano