Code default error messages to display when the end user enters invalid data or neglects to enter data that is required. You can code these messages for each field, or globally for all fields. A field-specific message overrides a global message.
When users fail to enter data correctly, you can display an error message that explains the problem. You can define two error messages, one for when the end user enters invalid data, and one for when the end user neglects to enter data that is required.
These can be global messages that display for all fields and controls, or specific messages that display for individual controls and fields. Messages defined for a specific control or field override the global messages. You can also define conditions for bypassing input edits under certain conditions.