You have defined a Default Tax information in the affected Product's Master Data containing default Tax Country, Region, Tax Type, Tax Rate Type and Tax Rate. Although, this information is being wrongly detemined under Items > Taxes tab for Purchase Order, even though all the information including the Country and Region are the same as maintained in the Product's Master Data.
SAP Business ByDesign
Reproducing the Issue
Go to Purchase Requests and Orders Workcenter.
Go to Purchase Orders View.
Search and open the affected PO.
Click on View All and go to Items tab.
Select the affected Line Item and go to Taxes subtab.
- See that the Tax Type and/or Tax Rate Type are for example Standard 21%.
- Now for the selected Line Item, double click on the Product's ID Hyperlink and open its Master Data.
- Go to Taxes tab and see that the information maintained in there is different.
This is happening because you have defined a Region on the Product Master Data.
There is no region based tax calculation for countries like Spain and France and this is the reason why the automatic Tax Rate Determination is picking a different information. The Tax Rate percentages for those countries are not different from region to region.
The Tax information maintained in the Material Master Data will work correctly if the Region for those countries is empty.
Tax Rate Type, Tax Type, Wrong Tax, Determination, Purchase Order, PO, Spain, France , KBA , SRD-FIN-TAX , Tax Management , How To