this course is going to cover third party sales. regular sales, you can find buyer and seller or company as parties where as third party sales you can find vendor as another party for customer delivery. IPO is almost similar like third party sales but company will deliver the stock to customer by company once company receives the stock from vendor. stock transfer happens between two plants in the same company code or some times, it is in between two plants belong to two separate company codes. SD and MM consultants can have basic understanding about integration at certain aspect in this course.