Traceability
Trace any number back to its source.
Open any figure in your report and follow it back: the calculation, the plants that contributed, the bill behind each entry and the people who approved it.
Approvals & audit trail
Sign off ESG numbers the way you sign off the accounts.
One person enters a figure, another approves it, and the record shows who did what and when. Every number keeps its evidence, ready for your assessor.
Approval stages
Four stages. No one approves their own work.
- ContributorEnters the figure and attaches the evidence.
- ReviewerApproves it, or sends it back with a note.
- Internal auditChecks the approved figure.
- External auditorRecords their own decision, without changing data.
What you get
Controls your finance team will recognise.
Two-person approval
The person who enters a number can never be the one who approves it.
Returned with a reason
A reviewer can send a figure back with a note, and the note stays on record.
Locked periods
Once a period is reviewed it is locked, and the lock shows who applied it and when.
Automatic checks
Missing evidence, unit mismatches and unusual values are flagged before they reach a report.
Evidence library
Every bill, invoice and certificate is kept with the numbers it supports.
Tamper-evident audit trail
Any change to the record can be detected, and your auditor can verify that independently.
Auditor access
Give your auditor a view, not a folder of files.
Invite your assessor or auditor to see each figure with its evidence and approvals already attached, so assessment starts from a complete file.
- They record their own decision, but cannot change your data.
- They can check the audit trail with a separate verification tool, without relying on Sustano.
Board sign-off
File exactly what the board approved.
Share a draft with the board as PDF or Word. The final report carries a unique fingerprint, so anyone can later confirm that the filed report is the one that was approved.
FAQ
Frequently asked questions
How does our external auditor take part?
Invite them as an Auditor. They can see everything in scope and record their decision after internal audit, but they cannot change data.
Do imported values skip any stage?
No. Every figure goes through the same approval, whether it was typed in, uploaded in a spreadsheet, proposed by AI or sent by a supplier.
How long is evidence kept?
Evidence is stored with a retention lock. The default retention period is 8 years.
Show your assessor the trail, not a folder of spreadsheets.
Book a demo and we will follow one number from entry to a locked report with an illustrative dataset.