The service account is used by Humly Control Panel to connect to the booking system. This service account handles the communication between Humly Control Panel and the booking system. Humly Control Panel will not function if there is a problem with the service account.
If the service account password is changed or reset in the booking system you have to update it in the global settings in HCP as well. Note that if the service account password is changed it does not affect the login password to the Humly Control Panel.
To set up a service account for your booking system, please visit the Booking System Preparation getting started support guide.
Read more about different accounts and account types in Humly Control Panel.