Sage Accounting API. We are planning a migration to n8n

Hello everyone our company has been using Zapier for a few years now. I would like to change to the n8n cloud but before I would like to know how can I make sage api work with n8n I tried to do it by myself and I am blocked from the start at authentication and Callback Urls … and I am a little lost is there anyone who could help me or show me how to proceed thank you.

https://developer.sage.com/api/accounting/quick_start_guide/
https://developer.sage.com/api/accounting/api/

Welcome to the community @OnlyCofee

You have to use the HTTP node with the OAuth2 authentication type. Is that what you are doing?