The system allows for the transmission of release data from an importer/broker to the CBSA via EDI Release. Since this "Electronic Release" process is paperless, the delivery authority copy of the cargo control document is no longer available to the CBSA for processing and delivery to the sufferance warehouse operator/carrier. The transmitter of the release data to the CBSA (importer/broker) is always provided with a notification message once the goods are released. In addition, where the carrier/warehouse operator is an RNS participant linked to the carrier/account security/office code associated with the released goods, they will also receive an RNS release message.

However, if the carrier/warehouse operator is not an RNS participant they still need to know that the goods are released. Also, the carrier/warehouse operator who is on RNS in a limited capacity may only receive a portion of their release information electronically (i.e., for specific carrier, account security, office codes, or sublocation) and will require notification of release in some other manner.

While the CBSA encourages warehouse operators and carriers to participate in electronic commerce and receive notification of all customs releases, it is the responsibility of the Electronic Release participant and the warehouse operator/carrier to come to terms with the provision of the notification of release, where necessary.
Sufferance warehouse operators must be able to either receive RNS messages electronically as an RNS participant or by hard copy (i.e. facsimile) from a service provider such as a Customs broker. The sufferance warehouse operators will not release goods from their warehouse without having received a Customs-stamped delivery
authority copy of a cargo control document, or an RNS message directly from the system or from their dedicated service provider.