KevinTheJedi Hi,
tank you for the answer.
System Logs is already set to "DEBUG", but no errors are reported.
In the "Aruba" domain the only way to set up a task is through a link.
I believe that the hosting company task manager is not hosted on the same machine.
I followed the procedure "EXTERNAL TRIGGERING USING WGET".
I tried with the "Aruba" task manager and with an external service (cron-job).
I tried with rcron (named "rcron1.php"), setting it up like this:
$config = array(
'url'=>'https://www.NOMESITO.it/ccps/support/api/tasks/cron',
'key'=>'52EAFXXXXAXXXX4XXXXCXXXX4XXXX128'
);
In cron-job:


This is the rensponse:

In osTicket no ticket has been generated and no debug notification.