1.Segregation of Duties SoD)

  Blog    |     March 07, 2026

Procurement approvals are a fundamental internal control mechanism specifically designed to prevent, detect, and deter fraud within the purchasing process. Here's how they achieve this:

  • Principle: No single individual should have control over all aspects of a transaction (requesting goods/services, approving the purchase, receiving the goods/services, authorizing payment, reconciling accounts).
  • How it Prevents Fraud: By requiring approvals from different individuals or departments than those initiating or processing the transaction, approvals break the chain of control. A single employee cannot easily create a fake invoice, approve it, receive the non-existent goods, and authorize payment without detection. The approver acts as an independent check.
  1. Independent Verification & Scrutiny:

    • Principle: An approver (manager, department head, procurement specialist) reviews the request before it proceeds.
    • How it Prevents Fraud: The approver assesses the legitimacy of the need, the reasonableness of the price, the vendor's credibility, adherence to budget, and compliance with policies. This scrutiny catches:
      • Fictitious Vendors: Approvals make it harder to create fake vendor accounts and submit fake invoices.
      • Overcharging/Price Inflation: Approvers can compare quotes or market rates.
      • Non-Business Purchases: Approvers ensure the purchase aligns with organizational needs.
      • Duplicate Payments: Reviewing invoices helps prevent paying the same invoice twice.
  2. Documentation & Audit Trail:

    • Principle: Each approval step creates a documented record of who approved what, when, and why (often with justification comments).
    • How it Prevents Fraud:
      • Deterrence: Knowing actions are documented and traceable discourages fraudulent behavior.
      • Detection: If fraud occurs, the audit trail provides evidence of who was involved and at what stage. Auditors can follow the approvals to identify anomalies or unauthorized actions.
      • Accountability: Approvers are held responsible for their decisions, making them less likely to approve suspicious requests.
  3. Authorization Control & Authority Limits:

    • Principle: Approval authority is delegated based on role, seniority, and the value/risk of the purchase. Not everyone can approve large or high-risk transactions.
    • How it Prevents Fraud:
      • Prevents Unauthorized Expenditures: Ensures only authorized personnel can commit funds.
      • Mitigates Risk: Higher-value or higher-risk purchases require more senior approvers with greater oversight and accountability, reducing the chance of collusion or manipulation at lower levels.
      • Reduces Collusion: If multiple approvers are required (e.g., for large purchases), collusion between the requester and one approver is harder.
  4. Enforcement of Policies & Procedures:

    • Principle: Approval processes are designed to enforce established procurement policies (e.g., competitive bidding thresholds, preferred vendors, contract requirements).
    • How it Prevents Fraud: Approvers act as gatekeepers ensuring compliance. This prevents:
      • Kickbacks/Bribery: Approvers can identify potential conflicts of interest or relationships with vendors.
      • Bypassing Controls: Ensures required steps (like getting quotes) are followed before committing funds.
      • Non-Compliant Purchases: Stops purchases that violate organizational rules.
  5. Deterrence Effect:

    • Principle: The existence of a visible approval process signals that purchases are being monitored and controlled.
    • How it Prevents Fraud: Potential fraudsters are deterred because they know:
      • Their actions require scrutiny from others.
      • Fake requests or invoices are more likely to be caught.
      • Their involvement will be documented and traceable.
      • There is a higher risk of detection and punishment.

In essence, procurement approvals act as a series of checkpoints and independent reviews:

  • Prevent: Make it harder and riskier to commit fraud by breaking control, requiring justification, and creating documentation.
  • Detect: Provide the audit trail needed to identify fraud if it occurs.
  • Deter: Discourage fraudulent behavior by increasing the perceived risk of getting caught.

Without a robust approval process, the procurement function becomes highly vulnerable to various fraud schemes, including fictitious vendors, kickbacks, inflated invoices, duplicate payments, and unauthorized purchases. Approval layers are a critical line of defense for safeguarding organizational assets.


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