while ( $cust_pay && $cust_pay->unapplied < $amount ) {
my @cust_bill_pay = $cust_pay->cust_bill_pay;
last unless @cust_bill_pay;
while ( $cust_pay && $cust_pay->unapplied < $amount ) {
my @cust_bill_pay = $cust_pay->cust_bill_pay;
last unless @cust_bill_pay;