How to delete Application from configuration ?

Question

The delete button is disable.

Answer 1

Check each configuration that contains this application and select the option not to install.

You will then be able to delete the application from the Applications tab.

Answer 2

​It is not possible to delete the application which is assigned to configurations.

To unlink an application from the configuration, find the application in the applications tab, click the "Configurations" icon, then set "Do not install" for all configurations.

Please note that the "Delete" action DOES NOT unlink the app from the configuration. The "Delete" action forces the app uninstalling on the devices, whereas "Do not install" means "do nothing".