As Access WageEasy is using an approved "Sending Service Provider" (SuperChoice) for STP reporting, it does not have an SSID for ATO. The Access Group uses an approved SSP (Sending Service Provider), which is SuperChoice, to send the information to the ATO. You do not need to supply an SSID to the ATO.
Refer to the ATO STP checklist, which states you can connect in 1 of 3 ways. Access WageEasy software uses a sending service provider (SSP).