l Sales ledger balance is reconciled at least monthly to control account balance in General Ledger. 2 Aged debtors listing based on payment due dates reviewed at least monthly. 3 Series of standard letters generated from computer system for customers overdue. 4 Is there a procedure to ensure that in the case of slow or non-paying accounts further sales are either not made or are referred for appropriate authorisation? 5 Written policy exists for debt collection together with an allocation of responsibilities.