The business process owner should own the exception, with IAM or GRC providing the control record and review discipline. If ownership sits only in security, the exception becomes a report item instead of a managed business risk. Clear ownership is what makes the control defensible.
Why This Matters for Security Teams
SoD exceptions are not just an IAM configuration issue. They are a governance decision that creates explicit business risk when one identity can both request and approve, or create and release, the same sensitive action. When that exception is poorly owned, teams lose the ability to prove who accepted the risk, how long it remains in place, and what compensating controls are active.
This matters even more in environments with service accounts, scripts, and other NHIs, where privileged actions happen faster than manual review can keep up. NHI Management Group notes that NHIs outnumber human identities by 25x to 50x in modern enterprises, and 97% carry excessive privileges in its Ultimate Guide to NHIs. That is why SoD exceptions need business ownership, not just security oversight, and why lifecycle control should be anchored in governance guidance such as the NIST Cybersecurity Framework 2.0.
In practice, many security teams discover weak exception ownership only after an audit finding, fraud review, or production incident has already exposed the control gap.
How It Works in Practice
The business process owner should own the exception because they are accountable for the process outcome, the operational need, and the risk acceptance. IAM or GRC should maintain the control record, evidence, and review cadence, but they should not be the risk owner. That distinction matters: security can enforce discipline, but it cannot justify why the business needs to keep a conflicting access path open.
A defensible exception record usually includes the following:
- the exact sod conflict being waived, with system and process scope
- the named business owner who accepts the risk
- the compensating controls in place, such as monitoring, approval routing, or JIT access
- the expiry date and review trigger
- evidence of periodic re-approval or closure
For NHI-driven workflows, this is especially important because exceptions can be embedded in automation. A service account may trigger a payment release, open a change record, or move data between systems without a person seeing the conflict in real time. The practical control is to tie the exception to the process owner and to constrain the NHI with least privilege, short-lived credentials, and logging. NHI Management Group’s Schneider Electric credentials breach illustrates how identity misuse can quickly become a business-risk event when access is not governed tightly enough.
Current guidance suggests aligning the exception workflow to a formal risk register, with IAM or GRC acting as the control operator and the business owner acting as the accountable approver. These controls tend to break down when approvals are handled by a central security queue with no operational context, because exceptions then outlive the business need that justified them.
Common Variations and Edge Cases
Tighter exception governance often increases review overhead, so organisations must balance speed of operations against the cost of recurring approvals. That tradeoff is unavoidable, especially where separation is impractical in small teams, emergency access, or highly automated environments.
One common edge case is a temporary exception for a new system rollout. Best practice is evolving, but current guidance suggests assigning the exception to the business owner of the process, not the project team, because the project eventually ends while the operational risk remains. Another case is emergency access, where the approving authority may shift to an incident commander or delegated executive, but the record should still map back to the business service owner once the event is over.
For NHIs, the edge case is often a machine-to-machine workflow that cannot be cleanly separated into requestor and approver roles. In that case, the control design should move away from permanent privilege and toward time-bound, purpose-bound access, with logs reviewed under the same ownership model as human SoD exceptions. This is where NHI Management Group research is clear: weak visibility and excessive privilege make exception ownership harder, not easier.
There is no universal standard for this yet, but the operational rule is simple: if the business benefits from the exception, the business must own the risk, while security keeps the evidence and enforces the review.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
OWASP Non-Human Identity Top 10 address the attack and risk surface, while NIST CSF 2.0 and NIST AI RMF set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC-4 | SoD exceptions are access governance decisions tied to least privilege and approval control. |
| OWASP Non-Human Identity Top 10 | NHI-03 | Exception ownership matters when NHI privileges and credentials are over-broad or persistent. |
| NIST AI RMF | Risk governance requires accountable ownership for exceptional access decisions. |
Document each exception, assign a business owner, and review whether compensating controls still satisfy PR.AC-4.
