This is an open-source project from Apigee. It is not covered by Apigee support contracts. However, we will support you as best we can. For help, please open an issue in this GitHub project or on community.apigee.com. You are also always welcome to submit a pull request.
This module is supposed to help add OAuth client_credentials and password grant type flows to SmartDocs.
Please add grant_type as a query parameter on the access token url in the security settings on the SmartDocs model revision.
To install this module please drop it in sites/all/modules/custom folder