Service Excerpt does not display on making an appointment page

I have the following configured for my make appointment page - but the excerpt for the SERVICE does not display... I have removed also but still nothing.

[app_my_appointments]
[app_services description="excerpt" autorefresh="1"] [app_service_providers autorefresh="1"]
[app_schedule] [app_schedule add="1"]
[app_pagination step="2"]
[app_login]
[app_confirmation]
[app_paypal]