Caution Payment and Payment Note regarding

Question

Hi SAP SD Gurus,
I am Prasad, I am new to SAP and have an isuue with my client .
i will be greatful to all for helping me in resolving this issue.
1 scenario
my client takes advance payment greater than or equal to the order quantity.
The customer lifts the material partly.
my client has to prepare the payment note before every partial lift
example:
  First lifting (prepare payment note for all lifting quantity)
  Second lifting (prepare payment note for all lifting quantity).
  Last lifting   (prepare payment note for all lifting quantity).
My request is how to deduct of the advance of each delivery in SAP.
2. Scenario 
*order
*Caution payment (guaranty for production order)
Payment note of the first lifting note
*Payment note of the second lifting note
*Payment note of the last lifting note
The question is when the customer has paid the entire paymentnotes (complete payment); how to give this caution to the customer in SAP?
please send a email also to :: [email protected]
Thanks in advance
Prasad
Edited by: prasad kollipara on Feb 25, 2008 12:32 PM

Answer 1

But Dear do tell me one thing that I have credit the accural, through credit memo where system credit the customer account that is ok.
but final settlement basically revert all the credit, and again debit the customer account.
Looking for your response.
Regards,