What is the impact of Customer Contact on downstream processes?

Summary:

Content (please ensure you mask any confidential information):

Please help us to have clarity on the below mentioned points:
1) Account level contact vs Site level Contact

(a) Understand what flows downstream- to the sales order, invoice, statement/dunning, and any other customer facing documents (i.e. shipping documents)

2) Responsibility-

(a) Define each responsibility and how it interacts with downstream documents- sales order, invoice, statement/dunning, shipping documents.

Version (include the version you are using, if applicable):

25C (11.13.25.07.0)

Code Snippet (add any code snippets that support your topic, if applicable):