Answer
SBR (Standard Business Reporting) was the method used to lodge End of Year figures with the ATO before Single Touch Payroll replaced it. The SBR Submissions screen lets you review these historical lodgements and access ATO reference numbers and response messages.
Desktop App
Go to Company >> SBR Submissions and click View beside any submission to see an overview of what was lodged, including the ATO receipt identifier and any success or error responses returned at the time.
Online (Web/Mobile) App
Navigate to Company >> SBR Submissions. The table shows each submission with its processed date, service type, and receipt identifier. Click View beside any row to open the full submission detail, which lists the employee figures that were sent and the ATO responses. A Download PDF button is available on the detail screen to save a copy of the submission.

If you need to lodge End of Year figures with the ATO today, SBR is no longer supported. See How Do I Process EOFY and Lodge With the ATO? for current lodgement options including Single Touch Payroll.