When using the profile scope for requesting authentication you do not get a seller id. You do get the user’s amazon id.
I have created a website for sellers and I want to get their seller’s id when they signup for the website so they can upload products and such.
If you add the cpc_advertising:campaign_management scope you get the seller’s id as well as their amazon id. Not all of my users utilize amazon advertising so I can’t rely upon adding the cpc_advertising:campaign_management scope to get their seller id.
Seems to me there should a scope that will return a seller’s id along with their amazon id.