Summary (TL;DR)
Users with Accounts Payable permissions can edit a Bill — including adding invoice attachments — only while the Bill is in a pending approval state; once a Bill is fully approved, it cannot be edited or deleted.
Prerequisites
Required Permissions: You must be an Accounts Payable User, or have a custom permission granting access to Bills.
Prior Configuration: The Bill must currently be in the Pending approval status. Once a Bill reaches Fully Approved status, Procurify locks the record and no further edits or deletions are possible.
How do I edit a pending Bill?
Navigate to Accounts Payable > Manage Bills.
Open your Pending queue.
Select the applicable Bill.
Locate the relevant line item and click the 3-dot options button.
Select Edit.
Make your changes — including adding invoice attachments — and click Save.
What happens after a Bill is approved?
Once a Bill moves from Pending to Fully Approved status, Procurify permanently locks the record. Neither the Bill's line items nor its attached invoice documents can be edited, and the Bill itself cannot be deleted. This lock exists to preserve an accurate, auditable financial record once approval has been granted.