Artikel 27

1. Closed mails and à découvert transit items exchanged between two designated operators or between two offices of the same member country by means of the services of one or more other designated operators (third party services) shall be subject to the payment of transit charges. The latter shall constitute remuneration for the services rendered in respect of land transit, sea transit and air transit. This principle shall also apply to missent items and misrouted mails.
2. Parcels exchanged between two designated operators or between two offices of the same country by means of the land services of one or more other designated operators shall be subject to the transit land rates, payable to the designated operators which take part in the routeing on land, laid down in the Regulations, according to the distance step applicable.
2.1 For parcels in transit à découvert, intermediate designated operators shall be authorized to claim the single rate per item laid down in the Regulations.
2.2 Transit land rates shall be payable by the designated operator of the country of origin unless the Regulations provide for exceptions to this principle.