Vat payable for rate difference from sellers

Can you put in numbers in your quary...

Dear Baskar V

Suppose purchase was made RS-45000+5% Vat =45000+2250=47250 and after some time i recieved the credit note for rate differnce =Rs 450+5% Vat=450+22.5=472.5 so there is liability made for paying the sale tax to the dvat how will this transaction treat from credit not to vat payable

Thanks