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Customs Notice 22-17: Mandatory electronic notification of cargo at sufferance warehouses


The purpose of this notice is to remind sufferance warehouse owners/operators licensed by the Canada Border Services Agency (CBSA) of their obligation under Section 14 of the Customs Sufferance Warehouse Regulations, to transmit a warehouse arrival certification message (WACM) when unreleased goods physically arrive at the warehouse to which they are destined. When goods arrive in a sufferance warehouse yard and have not yet physically entered the warehouse, the goods are considered arrived at destination and should be arrived as soon as possible.

Sufferance warehouse operators must transmit a WACM for each cargo control number (CCN) that is destined to their sub-location. If the shipment is consolidated, only a WACM on the consolidated CCN is required. This includes a consolidated electronic house bill CCN. When the shipment is not consolidated a WACM on each non-consolidated CCN is required.

Example 1

Consolidated cargo is destined to the sufferance warehouse. The warehouse operator must transmit a WACM on the primary (consolidated) CCN. The CBSA system will cascade arrival to the lower level electronic house bills that are destined to the same sufferance warehouse.

Example 2

When the consolidated cargo is destined to the First Port of Arrival (FPOA) and the electronic house bills move under the control of the individual bonded 8000 CCNs to a sufferance warehouse, the warehouse of destination that receives the cargo is obligated to arrive each electronic house bill and not the consolidated CCN that ended at the FPOA. This obligation is mandatory for all sufferance warehouse types.

A WACM must be transmitted for each cargo arriving at a sufferance warehouse regardless of the carrier code on the CCN. The WACM must be transmitted by registered participants in the CBSA’s Release Notification System (RNS), using the Electronic Data Interchange (EDI).

To participate in the RNS service, clients and/or their authorized third party service providers must register and undergo system testing with the CBSA’s Technical Commercial Client Unit (TCCU). Detailed information is available in Chapter 21 of the Electronic Commerce Client Requirements Document (ECCRD). You may contact the TCCU by e-mail at or by calling 1-888-957-7224 and selecting Option 1.

Clients may experience delays in release processing should the WACM be delayed or not transmitted by the warehouse operator.

For e-mail support on eManifest policy and processes, contact the eManifest Help Desk at

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