A validation rule is enabled and configured on a per-column basis for base objects in the Schema Manager.
Validation rules do not apply to columns in any other tables in an
Operational Reference Store
.
Validation rules are disabled by default. Validation rules should be enabled, however, for any trust-enabled columns that will use validation rules for trust downgrades.
When you update a base object, and if you do not provide values for trust-enabled columns, the validation rules that depend on the trust-enabled columns are not applied to the associated cross-reference records.