An AI no PO invoice detection agent checks each incoming invoice for a PO number and verifies that any number found exists, belongs to the same vendor and still has open value.
Reads a new invoice and checks for a PO reference.
Looks for a matching PO by vendor, amount and description.
Marks as no-PO, missing reference or valid exception.
The budget owner states whether it was approved spend.
Goes to PO creation, approval or rejection.
It sorts invoices into those with a valid PO, those with an invalid or closed PO, and those with none, and notes whether the vendor is one that normally needs no PO.
It sends the no-PO group to the right owner with the invoice, vendor history and similar past spend, and logs the outcome.
Invoices without POs look like any other invoice until someone tries to match them, by which time the work has been done and payment is expected.
Suppliers omit it, mistype it or quote an old one.
Utilities and tax invoices legitimately have none.
The invoice often reflects work done without approval.
Nobody knows who ordered the item.
The same vendor may invoice without POs again and again.
Reads the invoice for any PO number, order reference or requisition number.
Checks that the number exists, belongs to this vendor and has remaining value and open lines.
Compares the vendor and invoice type against the list of categories your policy allows without a PO.
Looks at past invoices, contracts and cost centres to suggest who requested the spend.
Sends the invoice to that person with context and logs the reason it was flagged.
Bring a small sample and watch Flo work through it.
| Aspect | By hand | With the agent |
|---|---|---|
| Detection | No-PO invoices are found when someone cannot match one. | Invoices without a PO are identified on arrival. |
| Cause | It is unclear whether the PO was never raised or just not quoted. | The agent separates missing references from truly absent orders. |
| Exceptions | Policy exemptions are remembered, not applied consistently. | Listed no-PO categories are recognised and routed apart. |
| Buyer visibility | Procurement learns of off-process buying from AP. | Procurement sees no-PO spend by requester and vendor. |
| Pattern | Repeat offenders are invisible. | Repeated no-PO vendors and teams are surfaced. |
| If | Then | Who decides |
|---|---|---|
| Invoice has no PO reference but a matching open order exists | Suggests the order for confirmation | AP specialist |
| No matching order exists and category requires a PO | Marks as off-process and notifies the owner | Budget owner and procurement |
| Category is on the approved no-PO list | Routes it for standard approval | Budget owner |
| Vendor is not in the vendor record | Flags it for onboarding review | Procurement |
| Same vendor repeatedly bills without a PO | Adds it to the pattern report | Procurement lead |
| Invoice date precedes any request on file | Flags purchase after the fact | Finance controller |
The agent recognises them from the exemption list and routes them normally. Finance maintains the list.
The agent treats it as a mismatch, not a missing PO. The buyer decides whether to amend.
The agent flags the timing and asks for the reason. The budget owner and procurement decide how to regularise it.
The agent tries to link it to an order by content. A person confirms before anything is linked.
Talk it through with the team. We will map it to your steps and show where a person stays in control.
Agree which categories need no PO and write them down.
Flag no-PO invoices read-only and share the report.
Offer candidate POs for human confirmation.
Send repeat cases to procurement for follow-up with requesters.
Track it over time and by vendor. A falling rate suggests that purchasing and supplier communication are improving.
Quick answers to what people ask most about no PO invoice detection.
Book a demoIt is a supplier invoice that arrives without a purchase order number, or with one that is invalid. Detection means finding these invoices early so they can be reviewed under your policy.
No. Some spend, such as utilities or taxes, is normally not ordered through POs. The agent uses your exemption list so that only genuine gaps are raised.
It can recommend and draft the message, but a person decides whether to return, hold or approve it.
It looks at vendor history, contracts and past approvals to suggest an owner. People confirm or reassign.
What is contract to invoice validation?
→What is invoice intake?
→What is invoice email triage?
→What is invoice spam filtering?
→Bring a small sample of real items. We will show what Flo handles on its own and where it hands over to your team.
