In the April Issue 1 Bulletin, you announced the sandbox is now open to test Cargo and UATP type billings. In respect of UATP transactions, as a carrier who has opt-in to the ATCAN - SIS link, can we expect ATCAN to complete the testing on our behalf? Who should we expect to receive further communication from in this respect - IATA, UATP or ATCAN? Many thanks, Russell (BD)