The spec currently does not mention that returning accounts must be returned first in the API. This lets the IDP know that the first one is a returning account, since the method only returns something when the user is a returning user (eg there is at least one returning account)
The spec currently does not mention that returning accounts must be returned first in the API. This lets the IDP know that the first one is a returning account, since the method only returns something when the user is a returning user (eg there is at least one returning account)