validation centralizes small guards that throw OcpValidationError with consistent fieldPath strings—validateRequiredString, validateEnum, validateContractId, validatePartyId, validatePositiveNumeric, array/object helpers, and createValidator factory.
Reference
Utils — validation primitives
Re-exports OcpValidationError plus validateRequiredString, numeric, date, enum, array, object, monetary, contractId, partyId helpers used across batch and factory code.