For both record-keeping and troubleshooting purposes, it would be beneficial for an appointment's 'Service Rendered/Completed' field in NPAGo and Appointments Admin to indicate if an appointment has been rendered from NPAWorks.

A message such as 'This appointment has been rendered from NPAWorks.' would be suitable

Appointments rendered from NPAWorks will not be able to capture a geolocation, so this message would be helpful for trying to distinguish between appointments that are missing a location for the rendered/completed field.