Placing a check mark in this field activates the Customer function.
Customer selection
The cashier selects a customer. The POS sends a request for the updated status of the customer.
The results of this query are written to the POS database. From here, the transaction proceeds normally. If the customers are blocked or have exceeded their balance,
the standard POS application will take the appropriate action.
Error Handling
Since this is a query to the remote database, error handling is rather simple. If the remote database is unavailable,
the POS will use the values stored in the POS database.
If connecting to the database fails, it is possible to specify a secondary server for this request
as backup.