SEGREGATION OF DUTIES OF PARALLEL OCCURENCES

Segregation of Duties of Parallel Occurrences

The phrase “segregation of duties of parallel occurrences” is not a standard, fixed term in accounting or auditing literature. However, it can be understood as the application of the core segregation of duties (SoD) principle to situations where multiple instances of a process occur simultaneously (in parallel), rather than sequentially. The goal is to ensure that conflicting responsibilities remain separated even when transactions or tasks are executed concurrently.

🔍 The Core Principle: Segregation of Duties

The fundamental premise of SoD is that no single individual should be able to initiate, approve, execute, and record the same transaction from beginning to end. Strong SoD separates four key functions:

1. Authorization/Approval
2. Recording (bookkeeping)
3. Custody of assets
4. Reconciliation (comparing recorded assets to actual assets)

When these functions are combined in one person, the risk of errors or fraud that go undetected increases significantly.

⚙️ What “Parallel Occurrences” Means in This Context

In practice, “parallel occurrences” can refer to several scenarios where the risk of SoD conflicts is heightened:

• Concurrent Transactions: An employee processes multiple orders, payments, or journal entries at the same time. If that same person also has approval or reconciliation rights, they could manipulate one transaction while hiding it among the others.
• Parallel Approval Workflows: In automated systems, a single policy can be enforced across multiple instances of an ERP environment (e.g., implementation, test, and production) simultaneously. If SoD rules are not consistently applied across all parallel instances, a user might exploit gaps.
• Simultaneous Physical and Logical Access: A user might have both physical custody of an asset (e.g., cash, inventory) and logical access to the accounting system at the same time, allowing them to both steal and conceal.
• Parallel Sessions in Business Processes: In complex workflows, many sessions of a process run in parallel (e.g., handling many customer orders at once). The challenge is to ensure that the same person is not, for example, both entering and approving multiple parallel orders.

⚠️ Risks of Failing to Segregate Parallel Occurrences

If SoD is not maintained across parallel activities, the organization faces:

• Concealment of Fraud: An individual can perpetrate a fraudulent transaction in one occurrence and use their control over another parallel occurrence to hide the discrepancy.
• Systemic Errors: A single error in a parallel process (e.g., a flawed formula in a spreadsheet used for multiple transactions) can propagate undetected across many occurrences.
• Weakened Internal Controls: The independent check that SoD provides is lost, making the entire control environment less effective.

🛡️ Control Strategies for Parallel Occurrences

To mitigate these risks, organizations can implement:

• Parallel Authorization (Dual Control): Require multiple authorizers to approve a transaction concurrently, rather than waiting for sequential approval. This ensures that no single person controls a parallel occurrence.
• Consistent SoD Policies Across All Instances: When using ERP systems, enforce the same SoD rules in every parallel environment (development, test, production) so that conflicts cannot be bypassed by working in a different instance.
• Role-Based Access Controls (RBAC): Clearly define roles so that a user cannot simultaneously hold conflicting entitlements for parallel processes.
• Compensating Controls: If full separation is impossible (e.g., due to limited staff), implement independent reconciliations performed by a different person at regular intervals to detect discrepancies across parallel occurrences.

In summary, while “segregation of duties of parallel occurrences” is not a formal term, it describes the critical need to maintain SoD even when transactions or tasks are executed concurrently. The principles remain the same: separate authorization, recording, custody, and reconciliation — and ensure these separations are enforced across all parallel instances of a process.