INPUT TAX CREDIT

HI, I WANT TO CONFIRM THAT, I HAVE PURCHASED TAXABLE GOODS DURING F.Y.2007-2008 FROM A REGISTERED DEALER IN DELHI OF RS.10 LAKH, ON WHICH HE CHARGED 4% VAT, DURING MARCH 2008 WHEN I FILED MY VAT RETURN I HAVE CLAINED RS. 40000/- AS INPUT TAX, BUT DURING F.Y. 2008-2009 DUE TO SOME DISPUTE WITH THE SUPPLIER, LIKE BAD QUALITY METERIAL SUPPLIED, I HAVE W/OFF HIS ACCOUNT OF RS. 500000/-, PLS CONFIRM ME , WHETHER I WILL REDUCE MY INPUT VAT CLAIMED EARLIER OR NOT

THANKS ]

TRILOCHAN