In order to use Integration Framework with Salesforce, BSS needs to authenticate itself by using OAuth2 (Client ID and Client Secret). This can be done by creating Connected App in Salesforce, here are the steps

Add new Connected App

Specify redirect URL

The redirect URL should be https://<BSS FQDN>/core/oAuth/authorizedProvider
Once the connected app is created you can now get the client id and secret from manage connected app

Connected app created successfully and ready to use it in BSS
Below table contains the relation between Salesforce web API and models for a ready-to-use integration setup