The Invalid Error Handler error is issued in the following situations:

Remove the duplicated error handlers for the same exception.

Depending on your application requirements, you have to do one of the following: either change the destination of your security error handler to an Anonymous screen; or change the role of that screen.

Depending on your application requirements, you have to do one of the following: either change the Is Mandatory property of the screen input parameter; or change the destination of the error handler to a different screen with optional parameters.

Edit this error handler and set the suitable value for the Exception property.

Clicking the symbol will take you directly to the problem handler.

See Also

Handle Exceptions | About Error Messages