For a specific function, you can further adjust relation checking:
If you specify Optional as the level of relation checking, the relation is enforced if end users enter a value in the field. This means that you do not need to add your own validation to the action diagram. Doing so creates unnecessary processing.
If you specify No Error as the level of relation checking, CA 2E always checks the relation but issues no error if the relation fails the check.
Note: The No Error option is useful for distributed applications.
If you specify User as the level of relation checking, you must add your own validation for the relation in the action diagram.
