Factoring a Bill

[Andres Stickar]

Hi all.

In the normal operation, I bill a client and enter the bill in the system
with a due date to 30 days.
But in the real world, if I need the money before the due date, I can
negotiate it in a factoring enterprise or a Bank.
I release the bill to an enterprise or  Bank who give my the money today ,
but not all, and wait to the due date (30 days)
After 30 days they receive the all amount of the original bill.
Now the problem. How can I register this.
Thanks in advance

Andrés Stickar