CENVAT Tax

Hello Experts

I tried to create CENVAT Tax, item as Excisable u2013 Raw Material

When I tried to made an A/P Invoice with CENVAT the error way displayed as CENVAT code not allowed [A/P Invoice-Row Tax code] [Message 140080010-38].

It will be great if I could get an answer why it is happening and what could be done to post an A/P Invoice in this case.

With Regards

Jiss Mathew