Reporting to the Tax Authority 
You have to create a tax return for the tax authorities on a regular basis. In this tax return, you identify: Sales subject to withholding tax, sales partially subject to withholding tax, and sales exempt from withholding tax.
To access the reports for creating withholding tax, from the SAP Easy Access screen, choose Accounting
® Financial accounting ® Accounts payable ® Withholding tax.The reports are created according to the specific procedures of the country in question. The "Country variant" parameter on the selection screen for the withholding tax return controls the way in which withholding tax data is created.
For more information, see the program documentation.