Is mvat setoff available on 31st march invoice on next year

Hi,

During Audit of a company i got confused by one doubt..
If company purchased some goods from other part of maharashta on 31st march 2011 due to transportation Goods recd by company on 2nd April then is it correct to record invoice on 31st march?

2nd in excise, they took credit, when they actually received the goods i.e in the month of April-2012.

This treatment is correct or not ?