Invoice management is often equated with storage, and storage is the part everybody already has. Managing an invoice means holding everything that happened to it: when it arrived, what it was matched against, why it failed if it did, who approved it, what it was coded to, when it was paid and which version of it any of that applied to. That history is the asset.
Arrival and identity
When it arrived and through which channel, which supplier sent it, and whether that supplier and invoice number have been seen before. Those facts settle payment terms, duplicate detection and most supplier queries, and they are cheap to record at the moment of arrival and expensive to reconstruct later.
Match, exception and approval
What it was compared against, whether it agreed, and if not on what. Who resolved it, and who approved it with what amount and date. This is the part that is normally produced once by a person and then discarded, and it is exactly the part that gets asked about months later during an audit or a dispute.
Versions and closure
Suppliers reissue and correct invoices. A resubmission with the same number is not the same document, and a credit note against it changes what is owed. Keeping versions with their dates lets you answer which one was paid against, and closing an invoice explicitly, rather than letting it fade, keeps the open list trustworthy.
Questions people ask about invoice management
Is invoice management part of accounting software?
Accounting software records the accepted transaction. Managing the invoice covers the stretch before that, when it exists but is not yet a transaction, which is where the effort concentrates.
How long should invoices be kept?
According to your retention obligations, which vary by jurisdiction and by tax position. Keep the approval history with them, since it is part of the record.
Does invoice management include payment?
Usually up to scheduling. Execution is a banking function, though the record should show when and how it was paid.