Accounting for Sale return

Amit (84 Points)

10 May 2007  
I have an accounting query re the Sale return:
In the F.Y. 2005 -06 , a company has sold 5000 Kg. of material to a manufacturing concern.The concern had made payment of the full amount and has issued requisite sale tax forms.
In the FY 2006-07, the concern closes down and the unused material of 1000Kg lying with them, sends back.
What should be accounting treatment of the same in two Fin years?