Making Changes to a Purchase Invoice: Editing, Unposting & Deleting a Purchase Invoice
Updated 31 October 2026
You can correct a Purchase Invoice as long as it isn’t locked by a payment, a submitted VAT return or your lock date. Every change is recorded in the Audit History and the Ledger Entries.
Change a draft invoice
A draft hasn’t created any ledger entries, so you can change anything on it: edit the fields with the pencil icons, change the lines and click the save icon above them. If you no longer need the draft, choose Delete from the drop-down menu.
Change a posted invoice
To change a posted invoice, undo whatever has happened to it since, newest first:
- Remove any payments, credits or failures against it. You can see them on the Payment & Audit History tab. See Making Changes to a Purchase Payment.
- Click Unpost(1). Aedon makes equal and opposite ledger entries and the invoice goes back to Draft.
- Make your changes, then click Post. Or, to remove the invoice altogether, choose Delete from the drop-down menu.

When it can’t be changed
- Included in a submitted VAT return: it can’t be unposted or deleted. Correct it with a new transaction in a later VAT period.
- Dated before the lock date: it can’t be unposted until your finance controller moves the lock date back.
Every change is recorded in the audit history and the ledger entries, so you always keep a full audit trail. If you still can’t make the change you need, please raise a case and we’ll help.























