Custom Message Display Allows you to specify a custom message based on certain conditions. We currently do not support mapping for the messages that the Display Messages From DAO Provider property enables. If you want to edit Custom Message Display in XML format, turn on Advanced Mode. CustomMessageDisplay contains the following properties: • Display When — allows you to set the conditions to display a custom error message. When defining the Display When condition, the following operators are supported: Eq (Equal) Neq (Not Equal) Null, Is Not Null, Begins With, Contains and Matches (for regular expression). • Custom Message — The error message that you want displayed when the Display When condition is set. If a Display When condition is set during runtime but a custom message is not specified, the original message is displayed. If you want to hide the original message, use a blank string or any html code that renders no visible cues, such as <div> </div>, for the CustomMessage attribute. When multiple Custom Message elements are defined for this property, the first Custom Message, whose Display When condition is set, is used. If no conditions are met, an error message from the selected external system is displayed.