How a Manual Invoice Entry Can Skip Your AP Internal Controls

U.S. businesses lost $3.046 billion to business email compromise in 2025, according to the FBI’s Internet Crime Complaint Center 2025 Annual Report. Most of that fraud does not start with a hacked system. It starts with a person talking another person into skipping a step.

Picture a payment run with 16 supplier payments queued for release in the ERP. Fifteen came through your AP automation software, captured, matched, and risk-scored before anyone approved them. The sixteenth did not. Someone keyed it directly into the ERP, bypassing the AP internal controls built into your automation platform, using the same manual supplier invoice entry screen finance teams historically used, and it is sitting in the batch next to every other invoice, waiting to be paid.

Does a Manual Invoice Entry Bypass Accounts Payable Workflows?

No. When an invoice is entered directly into an ERP, it is not a workaround or a system mistake. It’s a normal, sanctioned part of accounts payable, and it has been for as long as anyone can remember. In this scenario, the invoice is keyed into the ERP, sits in the same payment batch as every other invoice, and gets paid out through the ERP’s normal payment run, start to finish, without ever passing through the AP automation platform.

That is the entire risk. Not that AP was bypassed. It was not. The invoice went through the same ERP, the same ledger, and the same payment run as everything else. The risk is that one specific layer, the one that captures, matches, and screens invoices before they reach an approver, never got the chance to look at the invoice at any point between entry and payment.

Why Would a Finance Team Member Key an Invoice in Manually Instead of Through Automation?

There are two concerning reasons this happens, and one is malicious.

• A well-intentioned employee is pressured into it. Business email compromise and CEO fraud schemes typically work by impersonating an executive or a supplier, creating urgency, and pushing an employee to act outside the normal review path. The employee is not trying to defeat a control. The request feels legitimate and time-sensitive, and manual entry is the fastest way to resolve it.

• The entry point is used deliberately. Internal fraud does not need to compromise anything. An employee with access to the manual entry screen can set up a fictitious supplier, sometimes called a ghost vendor, or submit a fabricated invoice, and manual entry is often the only path that will accept it without triggering a check.

Both scenarios are well documented. The Association of Certified Fraud Examiners’ 2024 Report to the Nations, based on nearly 1,921 cases across 138 countries, found that more than half of occupational fraud cases were linked to a lack of internal controls or a manager overriding existing controls. Ghost vendor and fictitious invoice schemes are named recurring categories in that data, not edge cases.

How Does AP Automation Reduce Fraud?

AP automation reduces fraud by screening every invoice that passes through it. Invoices processed through Traild’s AP automation platform are captured, matched to a purchase order and receipt, and screened against a broad set of government and third-party data checks before they reach an approver, including supplier verification checks built to catch a fictitious or altered supplier before payment.

Does the Dollar Amount Matter when it Comes to Accounts Payable Fraud?

It may be tempting to consider a $105 invoice that skipped screening as immaterial. However, the dollar amount was never the risk. The control gap is the risk, and a control gap does not know the difference between $105 and $105,000. If a single manual entry can skip the checks a business relies on for a small amount, the same entry point can carry a much larger one, whether the cause is a rushed employee or a deliberate scheme. The real question a $105 invoice should raise is not whether it matters financially. It is why an unscreened entry point exists at all, and who is watching it.

How Do You Detect an Invoice that Skipped AP Automated Screening?

Detection comes from reconciliation, not vigilance. Comparing the total value of invoices processed through the automation platform against the total value of the ERP payment batch surfaces any discrepancy immediately, including one as small as $105 that a manual review would almost certainly miss. Traild builds this comparison directly into payment batch review, alongside supplier verification history and behavioral analysis, so the gap surfaces before funds leave the business, not during a reconciliation weeks later.

Supplier statement reconciliation closes the same gap from the other direction. Traild’s supplier statement reconciliation automatically extracts and matches a supplier’s own statement against Traild’s invoice records, surfacing any invoice the supplier says it issued that never shows up in Traild. An invoice keyed directly into an ERP would still appear on the supplier’s statement, since the supplier issued it, but it would be missing from Traild’s side entirely, and that mismatch is exactly what this reconciliation is built to catch. The same check verifies supplier details against a pre-verified network before payment, so impersonated suppliers don’t go unnoticed either.

Approval timing closes the same gap from a different angle. An approval workflow that logs only who approved an invoice, not when they received it or how long they took, gives finance leaders less to work with when reviewing approval patterns after the fact. Pairing payment batch reconciliation and supplier statement reconciliation with an approval audit trail closes the gap from every angle, including what entered the process, whether the supplier’s records agree, and when the invoice moved through approval.

What Does Real AP Control Require?

AP automation is often measured by what it processes, including invoice volume, capture accuracy, and cycle time. That is only half the value. The other half is the ability to account for what did not go through the automated layer at all. A platform that only sees the invoices submitted to it cannot tell you about the ones that weren’t. Real control requires visibility into both sides of the ledger, which means the invoices the system automated and the invoices it never saw.

• Every invoice, automated or manually entered, should be reconciled against the ERP payment batch before funds move, regardless of how or why it entered the system.

• Approval workflows should record timing, not just outcome, so decision support is based on evidence rather than assumption.

• Segregation of duties between invoice approval and payment execution should be supported by two-factor authentication at the point of execution.

• Supplier verification should run on every new or changed supplier record, not only on invoices that arrive through the automated intake path.

The Question Every Payment Run Should Answer

The question a finance team should ask after every payment run is not only whether these invoices were approved. It is: did every invoice, no matter how it entered the system, go through the same checks? Most AP teams can answer the first question confidently. Far fewer can answer the second, and that gap is where unauthorized payments and internal fraud both find room to operate.

Traild is built to answer both. Beyond capture and matching, the platform reconciles what it processed against what landed in the ERP payment batch, giving finance teams a control layer most automation projects never build. Explore Traild’s AP automation platform, see how payment batch review works, or get in touch to talk through what a control layer like this would look like in your ERP environment.