How to Default Supplier while creating Purchase Requisition (Sourcing Rule)

In a typical business scenario users all the time manually select the suppliers and supplier sites while creating purchase requisition. In order to reduce the manual efforts and for saving of the time.

Here is the blog which will reduce the redundant manual activity where supplier and its site will default automatically while creation of the purchase requisition.  

This topic is divided in two parts-

A. Setup Part 

1. Setup of Profile Option
2. Setting up Sourcing Rule
3. Setting Assignment Set

B. Testing for Defaulting of Sourcing Rule by creation of Purchase Requisition