Gst july 2017

We have accepted the invoices uploaded by our Purchaser of Goods ,for JULY 2017 , and status is showing as accepted , but the invoices are not reflecting in GSTR 2A , but are are reflecting on GSTR-2 of purchaser because they have uploaded and we have accepted , now the other party is forcing it to show the invoices which have been accepted by us in GSTR-1 , as they are saying invoice are reflecting in GSTR 2 and not in GSTR 2A . They are saying that they will not get credit if the invoices are showing in GSTR-2 and according to them the invoices should be reflected in GSTR-2A for credit . and when I am trying to upload the invoice it is giving following error. INVOICE ALREADY EXIST IN RECEIVER RETURN PERIOD JULY . Plz help