Invoice value is higher than PO price but Invoice is correct price

Dear Users,

User has created PO with 10 rupees and done GRN, now the invoice received is 12 rupees. Amount in invoice is correct price and the PO price is wrong as the materials are also been consumed so we cannot do reversal og GRN and ammend the PO. Please elp me out with a solution.

Thanks,

Manoj