Performs field validation when the user leaves the field or one of its dependencies is changed. This call is only made if there is a field validation of type SQL set for the field info.
Supports custom errors:
May modify database:
The value of the field, the procedure will not be called if value is NULL.
Resultset: Validation messages
repeated zero or one time
zero or one row
Error message to display. Blocks the user from saving.
Informative message to display. Does not block saving.