Overview
A global manufacturer with a high-volume accounts payable operation had outsourced its AP function to a large business process outsourcing provider (BPO) for several years. The BPO managed invoice processing, payments, and day-to-day supplier account activity across North America and the EU.
A BPO serves an important role in keeping AP operations running: processing high volumes of invoices accurately, managing payments on time, and maintaining day-to-day account activity. What it is not designed to do is identify funds sitting unclaimed on supplier books, reduce the error patterns that accumulate quietly over time, or collaborate directly with suppliers to resolve aged credits. That requires a dedicated accounts payable recovery audit team with a structured process built specifically for that purpose.
To address that gap, the company engaged apexanalytix to conduct a standalone AP recovery audit across its North America and EU operations. The audit covered the full transaction history, including years in which the BPO had been fully active.
Over the first twelve-month audit cycle, apexanalytix recovered more than $2.5 million in total, with more than $1 million originating from periods when the prior provider was managing the account.
Challenge
The company’s AP environment was complex: 2 million invoices processed annually, $6 billion in spend, multiple business segments across two regions, and a supplier base of nearly 8,000 vendors. The BPO’s focus on processing a high volume of invoices and payments left gaps around potential duplicate payments or unapplied supplier credits.
- No supplier statement review process. The BPO had no structured means to request, receive, document, or process supplier statements. Open credits on supplier books had no mechanism to eventually get applied.
- No escalation for unresponsive suppliers. When a duplicate payment or supplier credit was identified, the BPO team would reach out to the supplier to resolve it, but there was no formal process for non-responsive suppliers. Supplier contacts change and without a way to escalate, credits went cold.
- No dedicated AP recovery audit reporting. Since a recovery audit was not viewed as a standalone output. The client received no regular status updates on what was being found or missed, and had no visibility into what was being left behind.
Credits do not wait. According to apexanalytix internal audit data, for every year an audit is delayed, approximately 23% of recoverable value is lost as credits get written off, misapplied, or absorbed. By the time apexanalytix was engaged, several years of recoverable credits had been sitting on supplier books, untouched, across a supplier base of nearly 8,000 vendors and billions in annual spend.
Solution
apexanalytix conducted a dedicated AP recovery audit covering disbursements and supplier statement credits across the full transaction history. The engagement combined AI-driven disbursement analysis with structured supplier outreach and direct client coordination throughout.
- Disbursement review across 100% of spend data, using AI-driven analysis to identify duplicate payments, misapplied credits, and pricing discrepancies that standard ERP controls had not caught.
- Supplier statement review with structured outreach to identify and recover open credits. apexanalytix managed the full cycle: identifying the right supplier contact, sending requests through the optimal channel, processing responses, and following up automatically on incomplete or missing statements.
- Vendor master contact info enrichment to reach supplier contacts beyond those within the client’s vendor master, which is typically old, inaccurate or empty. apex leverages its database of 280 million suppliers to enrich the client’s supplier data and, on average, 80% of recoveries stem from apex’s contacts rather than a clients own vendor master data.
- Escalation coordination through the client when suppliers were unresponsive, applying internal pressure where needed to move stalled recoveries forward.
- Regular status reporting to the client throughout the engagement, tracking findings, recovery status, and next steps as a dedicated output, not a footnote within broader AP reporting.
apexanalytix has conducted AP recovery audits for more than 35 years and has over 200 audits active at any given time. That scale continuously refines the model: which suppliers are most likely to carry open balances, which error patterns slip past standard controls, and where the highest-value recoveries tend to hide.
Results
Over the first twelve-month audit cycle, apexanalytix recovered more than $2.5 million across more than 400 credits spanning both North America and EU operations.
Recoveries included duplicate payments, unapplied credits, rebates, pricing discrepancies, returns, and other overpayments that had remained unresolved within the supplier base.
Several of the largest recoveries traced directly to periods when the prior BPO was fully engaged with the account. The top supplier recovery involved a single overpayment credit exceeding $200,000 that had remained unresolved on the supplier’s books. The second-largest supplier recovery involved two rebate-related credits totaling more than $200,000. In both cases, the credits existed during the outsourced engagement but were never identified or pursued through a dedicated recovery process.
More than $1 million of the total recovered value tied directly to years when the prior provider was managing the AP environment, handling the same suppliers, invoices, and transaction history.
Top 6 Root Causes for Overpayment Recoveries
1. Rebates
Example: The company earned rebates based on spend or volume, but the associated credits were not issued or captured.
Recommendation: Track rebate-eligible purchases centrally, document rebate terms in supplier contracts, and create periodic reviews to ensure earned rebates are invoiced and applied.
2. Returns & Cancellations
Example: Credits for returned goods or canceled services were never issued or communicated to Accounts Payable, resulting in an overpayment.
Recommendation: Strengthen communication between operations and AP so returns and cancellations are shared immediately and require suppliers to issue credit memos promptly for all returned or canceled items.
3. Pricing Discrepancy
Example: The price billed on the invoice does not match the agreed rate in the contract or purchase order.
Recommendation: Use automated three-way matching and ensure contract rates and PO pricing are kept up to date, so discrepancies are flagged and corrected before payment.
4. Overpayment
Example: The company paid more than the correct amount due, often because of tax errors, billing mistakes, incorrect supplier selection, or system issues.
Recommendation: Implement stronger invoice validation checks across tax, supplier selection, and billing accuracy. Require exception review for high-risk or unusual invoice amounts.
5. Inconsistent Invoice Coding
Example: Invoices are coded incorrectly or differently than expected, which can cause them to be routed, recorded, or paid incorrectly.
Recommendation: Be consistent through clearer processes, better personnel training, and stronger system checks.
6. Other Duplicate Payments
Example: Duplicate payments identified through the Supplier Statement Review process that are either undetectable in the data or fall outside of the range reviewed in the Disbursement Review.
Recommendation: Establish a regular supplier statement review process to capture duplicate payments that fall outside standard disbursement data or detection ranges.
Conclusion
A BPO measures success in throughput and accuracy. A recovery audit measures success in what comes back. Those are different disciplines with different skills, different follow-through, and different definitions of done. When recovery has no dedicated owner, no structured outreach process, and no one whose job it is to pursue a supplier until a credit is resolved, recoverable dollars do not get flagged and escalated. They get written off.
That was the gap apexanalytix was brought in to address. The audit identified more than $2.5 million in recoverable value that had been sitting open in supplier records without escalation or follow-up, despite being part of a long-standing outsourced AP process.
Just as importantly, it introduced a more disciplined approach to recovery by bringing structure, accountability, and visibility to an area that had previously been treated as incidental to day-to-day AP operations. Since the engagement began, apexanalytix has recovered more than $7 million across multiple audit cycles, underscoring the scale of value that can remain hidden without a dedicated recovery function in place.
