You’ve been using Perfony for a long time and you now know that each element in Perfony has its own ID: a folder, an action, a user, a folder template, etc.
But after a while, the number of actions starts to grow and visually having an action displayed with a 5-digit id (yes, you read that right! many are already there) isn’t very practical.
The ID will no longer be displayed, but it will remain in the system to avoid confusing two identical actions. You can find it at the end of the line in the action URL.