Cause: The initial value specified for a radio group, list item, or check box is invalid.
Action: Initial value must be one of the following:
1. Item, parameter, sequence, or global reference.
2. Equal to the "checked" value (check box only).
3. Equal to the "unchecked" value (check box only).
4. Equal to the "checked" or "unchecked" value - case insensitive (check box only).
5. NULL.