Create Agreement issue

Hello Guys,

I had created API for Adobe Sign features for that I use below structure which works perfectly

(https://secure.na1.echosign.com/public/oauth?redirect_uri=https://example.com/oauthDemo&

response_type=code&client_id=d4HQNPFIXFD255H&scope=user_login:self+agreement_write:account&

state=S6YQD7KDA556DIV6NAU4ELTGSIV26ZNMXDSF7WIEEP0ZLQCLDQ89OYG78C3K9SROC8DXCGRVSGKU1IT1)

also, create a document but in last step while creating agreement it's shown below message also I used an existing library

(GitHub - haseebmukhtar/AdobeSign.Net: C# library to call Adobe Sign (Echo Sign) REST API)

Error :

"PERMISSION_DENIED"

"The API caller does not have the permission to execute this operation"

NOTE : I followed this step but not working

The API caller do not have the permission to execute this operation