OAUTH_SCOPE_MISMATCH", "status": "error", "message": "invalid oauth scope to access this URL

OAUTH_SCOPE_MISMATCH", "status": "error", "message": "invalid oauth scope to access this URL

Dear all,

I have a problem with calling API for Zoho CRM. I'm using ZOHOCRMSDK-2.1.

Code for Authorization:

Code for calling method Get:

Details about the error:

	Name	Value	Type
▶	Details	{{ "code": "OAUTH_SCOPE_MISMATCH", "status": "error", "message": "invalid oauth scope to access this URL" }}	Newtonsoft.Json.Linq.JObject

In Postman I can create a Lead, but can not get accounts from CRM, because of this error.

What should I change? 

Thank you in advance!