ValidationMetadata
The kinds of constraint a validation rule can express, and the severities available.
List validation rule types
Returns the kinds of constraint a validation rule can express, each with the configuration it takes and a worked example. Requires `dq.validation-rule.read`.
List validation severities
Returns the severities a rule can carry, and what each does when a value violates it. Requires `dq.validation-rule.read`.
List custom validators
Returns the catalog of named custom validators (NPI Luhn, ABA routing, LEI ISO 17442, IBAN MOD-97, …). Each entry has `name`, `description`, `paramSchema`, `errorCodes[]`. Use it to populate a custom-function picker rather than hardcoding the list. Requires `dq.validation-rule.read`.