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 is comprised of the CBSA issued account security number of the I/B.

b. Change Function
The “Change” function involves the re-transmission of all data elements transmitted in the Add/Original transmission. An “Add” transmission must be on file prior to sending a “Change” transmission. The Transaction Number transmitted with the original “Add” must be identical in the “Change” transmission. Clients are required to transmit a “Change” to update the current data transmission for any of the data information pertaining to the importation changes or to respond to a CBSA/PGA Reject notice prior to 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.

d. Amend Data Transmission
The “Amend” function also involves the re-transmission of all data elements transmitted in the original “Add” transmission and must be transmitted when updates are required after the arrival of the shipment at FPOA. An amendment code that specifies the type of amendment being made must be provided. For further information regarding these functions as they apply to the transmission of IID, refer to the Change/Cancel/Amend Business Rules.