Invoice raised but material not supplied

Danish (Accounts Executive) (73 Points)

27 August 2018  

WE ARE MANUFACTURING COMPANY AND HAVE ISSUED INVOICE ON 31-07-2018 BUT DUE TO SOME REASON THE PARTY COULD NOT PICK UP THE MATERIAL AND THE ORDER WAS CANCELLED BUT I HAVE FILLED GSTR 1 FOR JULY SO NOW HOW DO I REVERSE IT AND IF I ISSUE CREDIT NOTE THEN ON WHAT GROUND BCOZ IT IS NOT SALES RETURN MATERIAL IS LYING AT OUR PREMISES.