Changes to Get dropdown options for a Person Field

added authentication authorization bad-request conflict method-not-allowed not-acceptable not-found not-implemented rate-limit server timeout unprocessable-entity unsupported-media-type validation discriminator mapping keys to the errors/items response property for the response status default

added bad-request validation discriminator mapping keys to the errors/items response property for the response status 400

added dropdown ranked-dropdown discriminator mapping keys to the data/items response property for the response status 200

removed dropdownOptions.StatusDropdownOption from the data/items response property oneOf list for the response status 200