Entering Vendor Invoices 
Use
In India, when you
enter a vendor invoice in Accounts Payable
(FI-AP), you follow the 
standard procedure
and, in addition, you assign the invoice to the appropriate section
code.
Procedure
1. From the SAP Easy Access screen, choose Accounting ® Financial Accounting ® Accounts Payable ® Document Entry ® Invoice.
2. Enter the header data as required, including:
¡ Bus. Place/Sectn: Your section code.
3. Enter other data and save the invoice.
Result
The system:
...
· Creates an accounting document with the necessary withholding tax items (including surcharges)
· Assigns all vendor items and withholding tax items to the section code that you have entered
· Assigns each withholding tax item a tax due date, which it enters in the Value Date field (which is not shown on the user interface)
When the time comes, you must:
The system automatically selects which withholding tax items need to be remitted on the basis of their tax due date.
· Create a withholding tax certificate for the vendor
If you post the wrong amount of tax or you have posted the tax using the wrong official withholding tax key, you can enter a journal voucher to reverse the posting.