well as far as actual receipt is concerned, there is not much problem except in cases of running accounts where the payee is not certain as to amount is received without deduction or after deduction. The problem may arises in cases where the amount is credited to the account of payee or debited to the account of buyer. Certainty in such caes will be difficult on the part of the payee as the amount may be remitted to him after a time gap depending upon the credit limit enjoyed by the payer.