We receive invoices And are paid The accounting department has detected that no receipts be returned. Which must be returned before the bill is paid off.
We have received the invoice and payment processing, accounting department has detected that there is not yet a return receipt to return a receipt, which must be before it is paid off.
We have received the billing and payment processing, but the account has been detected, there is no return receipt that they are to be applied to the invoice must be returned before you pay.