Down payment request scenario

Question

in my down payment request scenario system generate down payment request with reference to sales order.
following is the procedure.
10. PR00
20. MWST
30. Value include sales tax
40. AZWR                 10-30           Reqt 2, CalTy 48
lets assume at order level PR00 condition value is $100 and MWST value is $17 total value include sales tax is $117.
But when i generate the FAZ billing type system call only PROO value in the AZWR, means down payment generate only of PR00, mwst value is not incorporated in the AZWR.
Is it standard that system consider only PROO value for down payment request, or did i require some changes.
Looking forward for the response.
Regards,

Answer 1

Hello Jignesh,
Just a design level suggestion for your requirement.
You are looking to have a system that calculates tax during DP invoice.
Create a new Item category which has 'Billing Plan' tab enabled at Item level. Check with Abap'er to bring a custom field (check box) saying 'Tax on down payment'. Here the posting schema needs to be defined (like which account needs to be used for tax posting and its PK and D/H indicator and use some FM for tax calculation and check for zero balancing, etc.,.)
Then whenever the check box is ticked, and the Billing is performed for the DP invoice, then enable the system to calculate tax amount based on the tax classification & tax defined for the SO using the so called code written in routine or user exit. Now, the tax calculation can be achieved.
This is purely a custom suggestion (nothing to do with standard SAP). Sorry i couldnt able to provide much of a technical solution for your requirement . But still this is achievable and i worked some years back on the same.
BR, D'nesh