SalesForce clarification request

[dockoks]

Hi! We are trying to incorporate your extension for one of our bots in Cognigy, but we are missing some information regarding extension setup, so I am asking these questions here.

1. Is it possible to connect Application with only reading rights?

We need only to retrieve information and writing/deleting/editing records is not needed, so in terms of security we would like only read info). In the documentation of the extension connection it is highlighted to give full rights in OAuth Settings, is it the only option?

2. Does this extension work with testing environment? Or only production one?
Could you give more examples of the instanceUrl?

Since we tried every combination of provided id, secret with provided URL and could not establish the connection we get:

{
    "error": "invalid_client_id",
    "error_description": "client identifier invalid"
}

all the time

Thank you in advance!