Update a parcel which has not yet been announced, either to make changes to the original parcel data, or to request a shipping label if one hasn’t yet been created.
parcel_id of the parcel you wish to update, which you can retrieve via the Retrieve all parcels endpoint.
Note that when updating a parcel with a quantity higher than 1 (e.g. a multicollo shipment), setting request_label=true is not allowed, since multiple parcels will be returned.
POST request parameters listed under the Create a parcel or parcels endpoint. These request parameters must be nested under a parcel object.
request_label: false parameter to truefor parcels which you chose not to announce at the time of parcel creation, and which now need a shipping label.