DocuSign for Salesforce Integration Pt 1: Make API calls using Salesforce Named Credentials

This video walks through how to make API calls to DocuSign via Salesforce Apex Named Credentials.
-Named Credentials: developer.sale...
-DocuSign Authorization Code Grant: developers.doc...
-DocuSign Scopes: developers.doc...
-DocuSign eSign Envelope Create API: developers.doc...

[@lavanyaravindran3986]

this worked for me , thanks a lot

[@denissilva6507]

Hello, can you help me?
I did exactly as in the video, but I'm getting error 401, is there any other configuration to be done?
Thanks