Dell PowerConnect W Clearpass 100 Software 3.7 Deployment Guide - Page 172

Form Validation Properties The form validation properties control the validation of data entered into a form. By specifying appropriate validation rules, you can detect when users attempt to enter incorrect data and require them to correct their mistake. The initial value for a form field may be specified. Use this option when a field value has a sensible default. The initial value should be expressed in the same way as the field's value. In particular, for drop-down list and radio button selections, the initial value should be the key of the desired default option. Likewise, for date/time fields that have a display function set, the initial value should be a value that can be passed to the display function. Select the Field value must be supplied check box to mark the field as a required field. Required fields are marked with an asterisk: An optional field may be left blank. In this case, the field is not validated as there is no value for the field. However, any value that is supplied for an optional field is subject to validation checks. All values supplied for a required field are always validated, including blank values. Validation errors are displayed to the user by highlighting the field(s) that are in error and displaying the validation error message with the field: 172 | Guest Management Amigopod 3.7 | Deployment Guide