How to receive access to Account Receivables documents via API

Hello Team,

I have an application and want to integrate it with Sage 100 cloud.
I found the following specification:

help-sage100.na.sage.com/.../index.htm

As I understood, this API allows receiving all Account Receivables documents from Sage 100.
I would be extremely grateful if you could explain how to extract AR documents according to this specification via API?
Maybe you could provide any links to the documentation?