# Causes of run-time errors for the String Input Enable button

At run time the application logs errors about the button to diagnostics under these circumstances:

## Unassigned connections

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.

## Terminal resolution too small

If the terminal's resolution is too small to show the string pop-up keyboard or scratchpad, the pop-up is not shown and the application logs an error.

## Invalid Values

If the number of characters entered is greater than the maximum number allowed by the tag, when the operator presses Enter, the display turns red, the string is not sent to the Value connection and the application logs an error.

## See also

Create String Input Enable buttons

How the String Input Enable button works at run time

Causes of run-time errors for Enter key handshaking

Causes of run-time errors for the string pop-up keyboard

Causes of run-time errors for the string pop-up scratchpad