# How do I stop the same invoice being counted twice in my carbon figures?

Canonical: https://senseible.earth/answers/same-invoice-uploaded-twice-double-count

Give every invoice one identity: supplier GSTIN plus invoice number, or a file fingerprint. Check every new upload against that list before it is added. Duplicates usually arrive as a scan and an email copy of the same bill, or a revised invoice that replaces an older one.

## Common ways it happens

- Scan and emailed PDF of the same bill.
- A revised invoice that replaces an earlier one.
- Two people uploading the same month.

## What to keep

Keep the replaced invoice on file but marked as superseded, so the trail shows why only one counts.

## What Senseible does here

Senseible fingerprints every document, so the same bill uploaded twice is recognised and counted once.

- [Supplier Scope 1 counted twice](https://senseible.earth/answers/supplier-scope-1-double-counted-in-scope-3)
- [Restating after an error](https://senseible.earth/answers/restate-emissions-after-finding-an-error)

Sources: [GHG Protocol Corporate Standard](https://ghgprotocol.org/corporate-standard), [ISO 14064-3, verification of greenhouse gas statements (iso.org)](https://www.iso.org)

Last reviewed 2026-10-22.