At run time the application logs errors about the button to diagnostics under these circumstances:
If the Value connection is not assigned, when the operator presses the button the pop-up is not shown and the application logs an error.
If the computer's resolution is too small to display the numeric pop-up keypad or scratchpad, the pop-up is not shown and the application logs an error.
Create Numeric Input Enable buttons
How the Numeric Input Enable button works at run time