Doown Payment from customers

dear all

I have an issue relatted to customers.

When we get down payment from customers we post in F-29 T-code.After this we will transfer to normal open item by doing Downpayment clearing for customer and after this we will do Normal clearing In f-32 against customer invoice.

But here my dought is, is it possible when we get advance from customers at that time only i want clear the downpayment against the customer invoice.Is this can be done only in one T-code.

If so Explain in brief.