OAuth2 from our developer portal stopped working a week ago.
When redirecting to https://api.enterprise.apigee.com/v1/o/{org}/apimodels/{model}/templateauths/{scheme}/callback?state..., access token is not negocatied and the window displays the "Error: access_token negociation failure". We have been checking the security scheme of our model and everything is in order. Using same conf for performing OAuth2 outside the portal is working as well.
No revision of this model was created a week ago... It just stopped working.