Warehouse
Create a warehouse NPT (third party owned) that represents a business partner who stores the
      inventory physically for which the payment is made in advance with this data on the
      Relationships tab in the Warehouses (whwmd2500m000) session:
    - Select Yes in the External Site field.
 - • Select your business partner (supplier) in the Business Partner, Sold-to, and Ship-to fields.
 
Select Third Party (owned - NPT) in the Warehouses (btmcs0503m000) session of the Tax Engine.