Changes to Cancel a preorder

the data/buyer/consents/items/occurred_at response's property type changed from string to integer for status 200

added the required property data/buyer/consents to the response with the 200 status

added the new external_id_in_use enum value to the code response property for the response status 400

added the new external_id_in_use enum value to the code response property for the response status 401

added the new external_id_in_use enum value to the code response property for the response status 403

added the new external_id_in_use enum value to the code response property for the response status 404

added the new external_id_in_use enum value to the code response property for the response status 409

added the new external_id_in_use enum value to the code response property for the response status 429

added the new external_id_in_use enum value to the code response property for the response status 500

added the new requires_ekho_review enum value to the code response property for the response status 400

added the new requires_ekho_review enum value to the code response property for the response status 401

added the new requires_ekho_review enum value to the code response property for the response status 403

added the new requires_ekho_review enum value to the code response property for the response status 404

added the new requires_ekho_review enum value to the code response property for the response status 409

added the new requires_ekho_review enum value to the code response property for the response status 429

added the new requires_ekho_review enum value to the code response property for the response status 500

added the new resource_not_writable enum value to the code response property for the response status 400

added the new resource_not_writable enum value to the code response property for the response status 401

added the new resource_not_writable enum value to the code response property for the response status 403

added the new resource_not_writable enum value to the code response property for the response status 404

added the new resource_not_writable enum value to the code response property for the response status 409

added the new resource_not_writable enum value to the code response property for the response status 429

added the new resource_not_writable enum value to the code response property for the response status 500