Getting response as "Insufficient permissions" in create a score API route.

[nirodhasheran]

I have requested the assignments Create, Get, Update. The response was successful. ( Line Items - Canvas LMS REST API Documentation).  
But it's getting below response when requesting the 'create a score route'. (Score - Canvas LMS REST API Documentation )

{

    "errors": {

        "type": "unauthorized",

        "message": "Insufficient permissions"

    }

}
I used the same access token which is not expired for all the above scenarios. Is there any other authorization I need to use?

Please advice!

[James]

 @nirodhasheran