Distributing Customer Payments Automatically
You can use the A/R Payment Distributions form to apply or distribute payment amounts before posting them. The distributions determine how a payment is applied to a customer's account, and how it is distributed to the General Ledger (G/L).
Caution: 
 The system 
 posts only balanced transactions, one side to the cash account for the 
 payment and the other to the accounts receivable (A/R) account for the 
 distributions. Therefore, the applied amount for any transaction must 
 equal the check amount of the payment. If these amounts are not equal, 
 the system detects the error and cancels the posting.
         Note:  You can apply open credits and
            payments from a customer only to the customer and any of its subordinate customers. You
            cannot apply a subordinate customer's open credits or payments to another customer that
            is a subordinate of the same corporate customer. 
         To distribute payments automatically:
Note:  Creating distributions 
 automatically will use the G/L default account from the Accounts 
 Receivable Parameters form.