If you need to send a form to an administration and want to track its progress, opt for eTracking.
When downloading your form on Guichet.lu, you can choose the option "Download with eTracking" (Télécharger avec eTracking). This will generate a number that will allow you to follow your procedure's progress by email and/or SMS. The generated number is mentioned on a sheet that needs to be attached to the form.
Among the procedures that are available with eTracking, you will find, for example: