Unable to access CPQ Commerce REST API using OAuth

Summary:

When we try to invoke CPQ Commerce REST APIs using OAuth 2.0 as the authorization type, we are getting the below error -

{    "type": "HTTP://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html",    "title": "Resource commerceDocumentsOraclecpqoTransaction with key <bs_id> doesn't exist or is not accessible for current user."}

Content (please ensure you mask any confidential information):

Following steps were performed to set up OAuth with Oracle IDCS as the IdP

• Configured a resource application in Oracle IDCS with primary audience and defined scopes

• Configured a trusted client application in Oracle IDCS

• Configured CPQ for OAuth in the Integration Center