What is Duplicate Vendor Scheme?
Definition
Duplicate Vendor Scheme is a procurement and accounts payable fraud in which a legitimate supplier is intentionally or accidentally entered more than once in the vendor master file, allowing fraudulent payments to be routed through the duplicate record. Fraudsters exploit these duplicate vendor entries to submit invoices or redirect payments without triggering standard controls.
The scheme typically occurs when vendor onboarding procedures lack sufficient verification steps or when master data management controls are weak. Because duplicate supplier entries may appear legitimate in financial systems, the scheme can remain undetected for extended periods. Effective governance frameworks and structured oversight such as Vendor Governance (Shared Services View) help organizations maintain accurate supplier records and reduce this risk.
How a Duplicate Vendor Scheme Works
A duplicate vendor scheme usually begins when a supplier is entered into the vendor database multiple times under slightly different names, addresses, or bank account details. These duplicate entries create opportunities for unauthorized payments.
For example, a legitimate supplier named “Alpha Industrial Supplies Ltd.” may be entered again as “Alpha Ind. Supplies Limited.” While both entries refer to the same vendor, the duplicate record can contain altered banking information. Payments directed to the duplicate account can then be diverted to fraudulent recipients.
These schemes often exploit weak controls in vendor master data management and inadequate monitoring of Duplicate Vendor Record entries within financial systems.
Relationship to Fictitious Vendor Fraud
Duplicate vendor schemes share similarities with broader vendor fraud techniques, particularly the Fictitious Vendor Scheme. While fictitious vendor schemes involve creating entirely fake suppliers, duplicate vendor schemes rely on manipulating records associated with real suppliers.
Because the duplicated vendor appears legitimate, fraudulent transactions may bypass basic invoice verification procedures. Organizations therefore need strong validation processes during vendor onboarding and payment authorization.
Role of Vendor Data Management
Vendor master data accuracy plays a central role in preventing duplicate vendor schemes. Organizations maintain centralized vendor databases that track supplier identities, payment details, and transaction histories.
Financial systems integrated through ERP Integration (Vendor Management) help reduce duplication by consolidating vendor records across procurement and accounting platforms. These integrations enable finance teams to identify inconsistent vendor data or duplicate supplier entries during onboarding.
In modern procurement environments, vendor master data is often maintained across multiple systems. Tools such as API Integration (Vendor Data) enable synchronization of supplier information across procurement, accounting, and payment systems, ensuring that duplicate entries are identified and corrected quickly.
Internal Controls that Prevent Duplicate Vendor Schemes
Organizations implement several internal controls to prevent duplicate vendor records and associated fraud risks. A core control mechanism is Segregation of Duties (Vendor Management), which ensures that vendor onboarding, invoice approval, and payment processing are handled by separate individuals.
Additional governance mechanisms include vendor data verification procedures, supplier identity checks, and periodic master data audits. These controls ensure that vendor information remains accurate and that duplicate entries are identified early.
In shared services environments, centralized oversight through Shared Services Vendor Management provides standardized vendor onboarding procedures and consistent verification processes across business units.
Practical Example of a Duplicate Vendor Scheme
Consider a manufacturing company that regularly purchases materials from a supplier named “Global Parts Ltd.” During a system migration, a duplicate vendor record is created with slightly different spelling and a new bank account number.
An employee responsible for processing supplier payments begins routing certain invoices through the duplicate vendor entry. Over several months, the company unknowingly pays $150,000 to the fraudulent account.
During a vendor master data review conducted for Vendor External Audit Readiness, auditors discover that two vendor entries correspond to the same supplier. After investigation, the company corrects the vendor records and strengthens vendor verification controls.
Vendor Governance and Continuous Monitoring
Preventing duplicate vendor schemes requires continuous monitoring of vendor data and procurement transactions. Governance frameworks ensure that vendor records are regularly reviewed and verified.
Organizations may conduct periodic supplier reviews such as a Vendor Financial Health Assessment to confirm the legitimacy of suppliers and their payment information. Vendor performance evaluations can also be integrated into structured oversight initiatives like a Vendor Performance Improvement Plan.
In cases where vendor discrepancies are discovered, corrective governance procedures such as a Vendor Corrective Action Plan ensure that vendor records are updated and compliance requirements are maintained.
Best Practices for Preventing Duplicate Vendor Schemes
Centralize vendor master data management across procurement and finance systems.
Perform regular reviews of vendor databases to identify duplicate supplier records.
Implement strict verification procedures for vendor onboarding and payment changes.
Maintain governance standards such as a Vendor Record Retention Policy.
Conduct periodic vendor audits to validate supplier identities and banking details.
These best practices improve vendor data accuracy and strengthen financial oversight across procurement operations.
Summary
A Duplicate Vendor Scheme occurs when multiple records for the same supplier exist in a company’s vendor database, enabling fraudulent payments through manipulated supplier entries. The scheme often exploits weak vendor onboarding procedures and insufficient master data oversight. By implementing strong vendor governance, centralized vendor databases, and rigorous internal controls such as segregation of duties, organizations can prevent duplicate vendor records and detect suspicious payment activity early. Effective vendor management practices strengthen procurement transparency and support reliable financial operations.