Use this window to override a sourcing rule for a specific sales part and customer combination, or sales part and customer address combination. When the automatic sourcing process uses a sourcing rule, it will usually use the sourcing rule for the specific customer address number for the sales part. If no rule exists for the customer address number, it will use the sourcing rule for the specific customer for the sales part. Finally, if no rule exists for the customer, it will use the sourcing rule for the sales part.
For the description of each tab in the window, follow the appropriate link: Sourcing Rule per Customer, Sourcing Rule per Customer Address.