Carriers have the option to report their CSA Shipments on the eManifest or to continue using the pre-ACI process which involves a paper process with bar codes. In the latter case, if the truck only carries CSA Shipments, no manifest needs to be filed. However, if the truck carries a mixed load, a manifest reporting only the non-CSA Shipments must be filed. 

If a carrier decides to report their CSA Shipments on ACI, they must first notify the CBSA’s Technical Support Unit (TSU.UST@cbsa-asfc.gc.ca) and their CSA senior project officer. The carrier must also be enrolled in the Release Notification System to be able to transmit the CSA data via ACI. Additionally, it’s important to note that carriers reporting CSA data through ACI are also responsible for reporting their TCP data through the same platform.

When it comes to the information required for an ACI shipment, a CSA shipment is no exception. The carrier must provide a unique Cargo Control Number, CSA Importer Business Number, and all other information typically required for an ACI shipment, such as the Shipper, Consignee, and Commodity information.

At the border, the CSA shipment will be processed automatically as part of the ACI eManifest when the driver hands the officer the ACI Lead Sheet. The driver must also be prepared to present a FAST or CDRP card to demonstrate their eligibility to transport a CSA shipment.

See:
https://www.cbsa-asfc.gc.ca/prog/csa-pad/carrier-transport-eng.html
https://www.cbsa-asfc.gc.ca/eservices/eccrd-eng.html