1. Release data must be sent electronically unless there is a specific reason it cannot be done. Provide three reasons why release data cannot be submitted electronically. 2. Describe CBSA's Machine Release System. 3. When is Field 7 (Mode of Transport) of Form B3 completed? 4. What is the Accelerated Commercial Release Operations Support System (ACROSS)? 5. Describe the difference between an RMD release request and a PARS release request.