Sign API : scope agreement_sign missing?

Hi to all,

From the v6 docs : https://secure.na1.echosign.com/public/docs/restapi/v6#!/transientDocuments/createTransientDocument

it looks we need the scope 

agreement_sign

but in my developper console account API, there are only three scopes that I can check:

agreement_read, agreement_write, agreement_send

I tried to check all scopes, but the API keep saying :

{"code":"INVALID_ACCESS_TOKEN","message":"Access token provided is invalid or has expired"}

Why is that?

Regards,

Felix