ScalarLocaleA BCP 47 locale tag (e.g. "en", "fr", "fr-CA"). See https://www.rfc-editor.org/info/bcp47Used inAcknowledgementRegistrationBlockActivityBusinessContractRegistrationBlockEmailMarketingRegistrationBlockFacilityGiftCardLocationMembershipPassPhysicalProductSectionHeaderRegistrationBlockSelectRegistrationBlockSelectRegistrationBlockOptionStaffMemberTextRegistrationBlock
