How should security teams reduce segregation of duties risk when access reviews span multiple SaaS and ERP applications?

Security teams should use risk-based scoping and visual conflict mapping to focus reviewers on the access that matters most. Prioritise high-risk roles, preserve the path from user to privilege, and require justification for exclusions. That reduces review fatigue, speeds remediation, and makes it easier for auditors and business owners to understand where the real SoD exposure sits.

Why This Matters for Security Teams

segregation of duties reviews become fragile when entitlement data is spread across SaaS and ERP systems that each describe access differently. A reviewer can approve a harmless role in one platform while missing that the same user already holds a conflicting privilege in another. That is why risk-based scoping matters: it narrows attention to combinations that can actually create fraud, override, or self-approval paths. Current guidance in the NIST Cybersecurity Framework 2.0 and the OWASP Non-Human Identity Top 10 both reinforce the need for asset and access visibility before approval decisions are trusted.

For NHI Management Group, the practical issue is not simply volume. It is the loss of context when reviewers see disconnected entitlements instead of a traceable privilege chain. The same pattern appears in NHI security, where weak visibility turns routine access into hidden risk; NHIMG’s Ultimate Guide to NHIs and Top 10 NHI Issues show how incomplete inventory and over-privilege become governance failures. In practice, many security teams discover SoD conflicts only after audit exceptions or payment approvals have already exposed the gap.

How It Works in Practice

Effective cross-application review starts with a unified entitlement map that normalises SaaS roles, ERP permissions, and any connector accounts into the same risk model. The key is to preserve the path from user to privilege so reviewers can see whether a single person can create, approve, and post the same transaction across systems. That is especially important where business processes span procurement, finance, and identity administration, because SoD risk often emerges from the combination rather than any single access grant.

A workable review flow usually includes:

• Risk-tiering access by business impact, not by application count.
• Mapping conflicting privileges across systems before the review packet is built.
• Flagging inherited access, service accounts, and delegated admin paths separately.
• Requiring reviewers to justify exclusions so exceptions remain auditable.
• Using policy thresholds to route only high-risk combinations to business owners.

That approach aligns with the control emphasis in NIST SP 800-53 Rev. 5 Security and Privacy Controls, where access enforcement and review are only effective when the underlying entitlements are accurate and current. It also supports the visibility lessons in NHIMG’s 52 NHI Breaches Analysis, which shows how missing context and weak governance turn access sprawl into incident exposure. For teams handling multiple platforms, the best practice is to make one review packet reflect one business risk, not one application at a time. These controls tend to break down when entitlement data cannot be reconciled across tenants and custom ERP roles because reviewers lose the ability to compare privileges on a common basis.

Common Variations and Edge Cases

Tighter SoD control often increases review time and remediation effort, requiring organisations to balance audit precision against operational throughput. That tradeoff is unavoidable in complex environments, so current guidance suggests focusing human review on the combinations most likely to create financial or administrative abuse while automating low-risk recertification.

There is no universal standard for this yet, especially where SaaS applications expose coarse roles and ERP systems use highly customised duty structures. In those cases, risk-based scoping should be adjusted for local process design, because the same role name can mean very different things across business units. Temporary access, emergency elevation, and service integration accounts also deserve special handling, since they often fall outside standard user certification but can still create the most severe conflicts. NHIMG’s NHI Lifecycle Management Guide is useful here because lifecycle controls help ensure that privilege is reviewed, time-bound, and removed when the business need ends.

For organisations running shared services or outsourced finance processes, the review boundary may need to include vendor-operated access as well as internal roles. The right answer is not to inspect everything equally. It is to prove that every excluded item was intentionally outside the SoD risk model, not missed by the model. That distinction is often what separates an efficient control from one that only appears effective on paper.

Related resources from NHI Mgmt Group

• How should security teams reduce risk from dormant SaaS integration credentials in third-party ecosystems?
• How should security teams structure SAP ABAP access to reduce the risk of unauthorized changes in production systems?
• How should security teams run access reviews for non-human identities?
• How should security teams reduce the risk of SaaS access abuse through NHIs?