Clients can refer to CBSA D-Memo 3-3-1
(Freight Forwarder Pre-arrival and Reporting Requirements Memorandum)
http://www.cbsa-asfc.gc.ca/publications/dm-md/d3/d3-3-1-eng.html#wb-cont

For more information on the new notices, request a copy of the eManifest presentation entitled Introduction to New and Enhanced eManifest Notices.