# Causes of run-time errors for Enter key handshaking

At run time the application logs error messages about Enter key handshaking to diagnostics under these circumstances:

## "Enter key handshake time" expires

If the "Enter key handshake time" expires before the Enter Handshake connection resets the Enter connection, the application logs an error.

## Enter key handshaking still in effect

If the operator presses the Enter key for an object whose Enter connection has not yet been reset (using a key button or external keyboard or keypad), the application logs an error.

## Unassigned connections

If the Value connection is unassigned (or if the object cannot write to the Value connection), the Enter connection is not set to 1 and the application logs an error.

## See also

How Enter key handshaking works at run time