How should organisations prioritise segregation of duties remediation when ERP access is already over-assigned?

How to prioritise segregation of duties remediation when ERP access is already over-assigned

When ERP access is already too broad, the practical goal is not to fix every conflict at once. It is to remove the combinations that create the greatest fraud, override, and audit exposure first, while keeping business operations stable. That usually means ranking access by privileged transactions, approval paths, and the ease with which one person can initiate and complete a sensitive process end to end.

Start with the business processes where a single user can create, approve, post, and reconcile the same transaction, then move to roles that touch payments, journal entries, vendor master data, payroll, and access administration. Those are the places where over-assignment turns into a real control failure, because the issue is not just excessive access, it is the ability to conceal error or abuse inside an ERP workflow.

Use an evidence-led cut rather than a theoretical one. Review actual role memberships, transaction histories, and exception logs together so you can see where a conflict is both present and exercised. That approach is stronger than reviewing roles in isolation because many ERP environments inherit access through composite roles, indirect grants, or temporary exceptions that do not look dangerous until they are mapped against live usage.

Where you need a control reference for over-privilege and access review discipline, the OWASP Non-Human Identity Top 10 and CIS Controls both reinforce the same practitioner logic, remove excessive access first, then verify that the remaining access is still business-justified and observable. For a broader governance lens, the CIS Controls v8 and NIST Cybersecurity Framework 2.0 help frame remediation as a protect, detect, and recover problem, not just an access cleanup exercise.

What to fix first in an over-assigned ERP estate

The first wave should target combinations that can directly enable unauthorised financial or master-data changes. In most ERP environments, that means separation between request, approval, execution, and reconciliation. If one role can repeatedly cross those boundaries, the conflict is high priority even if the user is trusted, because the issue is structural exposure, not just potential misuse.

A useful triage pattern is to classify conflicts by blast radius. High-risk conflicts affect payments, vendor setup, tax settings, journal posting, inventory adjustments, or security administration. Medium-risk conflicts may be operationally awkward but not immediately fraud-enabling. Low-risk conflicts are often nuisance overlaps that can wait if they do not change the ability to complete and conceal a sensitive transaction.

Remediation should also account for compensating controls that can temporarily reduce exposure. Monitoring, alerting, dual review, and post-transaction reconciliation can buy time when access removal would break a business-critical process. The key is to treat those controls as interim containment, not as a permanent substitute for proper role redesign.

• Prioritise conflicts that let one user initiate and approve the same high-value transaction.
• Then address roles with access to master data, payment flows, and security administration.
• Use temporary monitoring only where removal would create immediate operational disruption.
• Verify that any exception has an owner, expiry date, and review path.

How to keep remediation moving without creating new operational risk

Over-assigned ERP access often persists because teams try to solve it as a clean-up project instead of a controlled change programme. The better approach is to sequence remediation by business criticality, not by how easy a role is to rename or repackage. That means lining up compliance, ERP support, process owners, and internal audit on a common risk ranking before changes start.

One important judgement is to avoid role-by-role rewrites that ignore transaction path overlap. A user can be compliant on paper and still unsafe in practice if separate roles combine into a full end-to-end ability. The remediation design should therefore test for effective access, not just explicit role labels.

For a practitioner who wants a concrete benchmark, NHIMG research on key challenges and risks highlights how excessive privileges and visibility gaps compound each other, and that same pattern shows up in ERP SoD failures. The most useful operational signal is whether you can explain, in one case file, why the user still needs each conflicting entitlement and what control proves the conflict is contained.

Practitioner Guidance: Prioritise the conflicts that combine high-value transactions with weak oversight, because those are the ones most likely to matter to fraud, audit, and resilience. Do not let the remediation plan become a generic role recertification effort; the goal is to remove the ability to complete and hide sensitive transactions, not merely to reduce the number of entitlements.

Practitioner takeaway: The right order is highest-risk transaction paths first, then the broader access cleanup. If a conflict does not change what the user can actually do, it can wait; if it does, it belongs at the top of the queue.

Related resources from NHI Mgmt Group

• When should organisations prioritise temporary AWS session credentials over static access keys?
• How should organisations discuss segregation of duties and sensitive access before an ERP cloud go-live?
• When should organisations prioritise advanced CIAM over legacy identity tools for Section 1033 compliance?
• When should organisations prioritise analytics investment over collecting even more data?