Update Accounts Receivable. Customer records in the accounts receivable (AR)
subsidiary ledger are updated from information the sales order (ledger copy) provides.
Every customer has an account record in the AR subsidiary ledger containing, at minimum,
the following data: customer name; customer address; current balance; available
credit; transaction dates; invoice numbers; and credits for payments, returns, and allowances.
Figure 9.17 presents an example of an AR subsidiary ledger record.