Changes to Create a message.

the endpoint scheme security basicAuth was added to the API

the endpoint scheme security clientTokenAuthorizationHeader was added to the API

the endpoint scheme security clientTokenHeader was added to the API

the endpoint scheme security clientTokenQuery was added to the API

the endpoint scheme security appTokenAuthorizationHeader was added to the API

added the non-success response with the status 400

added the non-success response with the status 403