3264820 - Origin Sales Tax coming as 'H' for Service Contract

Customer has two questions: 

Question 1: Where the 'H' is coming from? Where exactly it is customized in Manage Your Solution app?
Question 2: When we merge BDR and sales document why the Origin of Sales Tax No. is changing from 'H' to 'B' in the final billing document?

S/4HANA CLOUD

Question 1: Where the 'H' is coming from? Where exactly it is customized in Manage Your Solution app?

Answer: When the BDR is created, in order to determine the Origin Sales tax number, the program looks first at the customizing, finds the value 'B' and by that knows that the VAT will be derived by the Payer. But the program also looks at the preceding document of the BDR (the Service Contract) in order to check if the 'Tax Destination Country' field is filled.  If it is filled, this type of information is capture in the BDR in the 'Origin Sales tax number' by the value 'H'. This value is basically saying to the system that in order to determine the VAT it is not only needed to know the Payer but also the VAT for this Payer for the specific Tax Destination Country.  So the value 'H' is needed internally in order for the program to know that it has to look deeper in the data of the Payer to find the specific VAT number. Therefore, you -as user- can not maintain the value 'H' in the Manage Your Solution activity (there is no need for that).

Question 2: When we merge Billing Document Request and Sales Document why the Origin of Sales Tax No. is changing from 'H' to 'B' in the final billing document?

Answer: In this example, we are having a Sales Order and a BDR that are converging into one billing document. By design, the 'Origin Sales tax number' that you see in the final billing document is going to be derived from the first document you give as you create the billing document. In your case, you sequentially gave the Sales Order first and then the BDR so the 'Origin of Sales Tax No' was derived from the Sales Order. And why is it 'B'? Because the Sales Order had 'Tax Destination Country' empty, so 'Origin of Sales Tax No' is only determined by customizing which is 'B' (Payer).

billing document request, BDR, origin tax sales, service contract, H, B, sales document, Billing Document , KBA , SD-BF-TX , Taxes , SD-BF-TX-2CL , Taxes (Public Cloud) , Problem