Hi Abhinav,
Further to above thread, let me explain you in practical scenario.This way we will get lot of comments from others if its wrong.
Say for E.g. Your client is into Pharma Industry. They sell medicines to hospitals which has chain. Take an example of Apollo hospitals, India.
This has many hospitals across the India.
Now Say they place an order: For e.g. Sold to Party - Apollo Head office
Ship to Parties - Apollo - Bangalore, Chennai
Bill to party & Payer - Apollo - Finance Department (Eg. Hyd but different address)
Now, in above scenario, The POC for client is always Apollo Hyderabad, which is placing the order. For any payment related they will always approach Apollo finance division because they are the one who should pay for the billed Invoice.
@Experts: Please correct me if i am wrong in my explanation.
Regards, Sai Krishna.