oAuth2.0 Invalid Scope error

I am trying to use the Grant Type as Client Credential and trying to generate an Access Token using a Key, secret and scope, however when a Token is generated, it does not account for the Scope provided, so when I am trying to run a Service using the Token generated, it fails stating that the Scope is invalid.

Cannot find a solution online or on the Help topic for this issue, any information would be helpful.

Thanks in Advance.