a)       Add Function 
The “Add” function is a processing indicator identifying that the transmission of the message is an original. The transmission must contain a valid Cargo Control Number (CCN) and a unique Transaction Number. The Transaction number is a 14-digit number, the first five digits of which are comprised of the CBSA-issued account security number of the I/B.

b)      Modify Function 

The “Modify” function involves the re-transmission of all data elements transmitted in the Add/Original transmission. An “Add” transmission must be on file before sending a “Modify” transmission. The Transaction Number transmitted with the original “Add” must be identical in the “Modify” transmission. Clients are required to transmit a “Modify” to update the current data transmission for any of the data information about the importation changes or to respond to a CBSA/PGA Reject notice before the arrival of the goods at the First Port of Arrival (FPOA) in Canada.

c)       Cancel Function 

The “Cancel” is used to indicate that the goods are no longer being imported on the shipment and will result in the removal of the detailed information from the system. The Transaction number must be identical on the “Cancel” transmission as to the IID on the file. The Cancel function can only be used by a TCP pre-arrival of the shipment at FPOA.