How do I show an auditor exactly what I filed in a previous year?
Every generated package is frozen with its hash, its register snapshot and the validation run that authorised it, and cannot be altered afterwards.
- 1
Open Register, then Filing history.
You should see: Every package, with its cycle, reference date, hash and filing details.
- 2
Download the package for the year in question.
You should see: Byte for byte what was generated then, with a matching SHA-256.
- 3
Use Changes since last filing to show what moved between that filing and the register today.
Worth knowing
The package bytes, their hash, the register snapshot behind them and the authorising validation run cannot be changed after generation - the database refuses, not just the application. A filed package also cannot be deleted.
The filing details can still be edited, because recording what happened to a package afterwards is the reason for keeping it.
The differential reads its 'before' values out of the frozen snapshot rather than from anybody's memory of what the register used to say.