how to get missing invoices offset.

Satyapriy Chindak (118 Points)

23 October 2017  
the party gave me only single bill of purchase and no sale at all for the July month. now in 2A the another bill is shown of which the offset is not been claim. how to get the offset on GSTR2? my party has not taken the invoice (misplaced it) so couldn't take the bill for adjustment.

how it will get credited to my credit Ledger if I accept the bill? or how to avail the ITC missing. for July month.

please reply me fast.