User access reviews help confirm that permissions still match job responsibilities and approved risk tolerance. In ERP and financial platforms, access drift can create privilege creep, insider risk, and audit findings. Regular reviews also surface orphaned accounts, outdated roles, and excessive access before they become control failures or compliance issues.
Why User Access Reviews Matter in Financial Systems
user access review are one of the few controls that test whether ERP and finance permissions still reflect real business need. In systems that drive payroll, vendor payments, general ledger postings, and period close, stale access can quietly become fraud opportunity, segregation-of-duties failure, or a material audit issue. Good reviews catch role creep, orphaned accounts, and compensating control gaps before they are discovered by auditors or, worse, by an incident.
This matters even more because financial platforms often accumulate access through mergers, emergency approvals, shared service models, and long-lived exceptions. The result is not just too many users, but the wrong users with the wrong combinations of rights. NHI Management Group notes that 97% of NHIs carry excessive privileges, a reminder that access drift is not confined to human accounts and often expands fastest where controls are least visible, as discussed in the Ultimate Guide to NHIs. In practice, many security teams encounter access review failures only after an audit exception or payment irregularity has already surfaced.
How Access Reviews Work in Practice
An effective review starts by defining what “appropriate” access means for each business function, not just by listing who has access. Finance leaders, application owners, and security teams should review entitlements against current job responsibilities, approved exceptions, and segregation-of-duties rules. For ERP, that usually means checking whether a user can both create and approve payments, maintain vendors and post journals, or bypass workflow controls.
The review is strongest when evidence is tied to authoritative sources. Access tables, HR records, ticket approvals, and privileged access logs should be compared at the same time, because one source alone is often incomplete. NIST guidance on access control in NIST SP 800-53 Rev 5 Security and Privacy Controls supports this approach, while the OWASP Non-Human Identity Top 10 is useful when ERP workflows depend on service accounts, API keys, or automation accounts that also need review.
Operationally, the workflow should be simple: certify what must remain, remove what is no longer justified, and escalate anything ambiguous for formal risk acceptance. Reviews should also look for dormant accounts, emergency access that was never revoked, and users whose responsibilities changed after a transfer or promotion. The best programs treat review findings as remediation work, not as a checkbox exercise, and they track recurring patterns so role design can be improved upstream. The same lifecycle discipline described in the NHI Lifecycle Management Guide applies here, especially where business processes are automated. These controls tend to break down in heavily customized ERP environments because entitlement models, inherited roles, and manual overrides make it hard to prove what access actually does.
Where Reviews Break Down and What Good Teams Watch For
Tighter access review programs often increase administrative overhead, requiring organisations to balance assurance against reviewer fatigue and business disruption. That tradeoff is real, especially in finance environments with hundreds of entitlements, shared service teams, and rapid employee movement.
Best practice is evolving, but current guidance suggests moving from broad, quarterly attestation to risk-based review depth. High-risk privileges, payment approval rights, privileged technical accounts, and access tied to month-end close should be reviewed more frequently than low-risk read-only access. Teams should also separate human access from automation access, because a bot that posts invoices or extracts ledger data can become a control failure if its credentials are never reviewed or rotated. NHIMG’s research shows how quickly secrets and privileged access issues become operational risk in the Ultimate Guide to NHIs — Key Challenges and Risks, and that pattern matters wherever finance systems are integrated with scripts, integrations, and third-party tools.
The practical test is simple: if a reviewer cannot explain why a permission exists, or cannot trace it to a current business need, it should be removed or formally reapproved. Reviews lose value when they are copied forward unchanged, when managers approve on autopilot, or when custom ERP roles obscure the underlying privileges. They are most effective when tied to role engineering, joiner-mover-leaver controls, and evidence that removals actually occurred.
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, NIST SP 800-63, NIST AI RMF and NIST Zero Trust (SP 800-207) set the governance and control requirements practitioners need to meet.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST CSF 2.0 | PR.AC-4 | Access permissions must be reviewed and adjusted to match current job need. |
| OWASP Non-Human Identity Top 10 | NHI-03 | Non-human accounts in ERP also need periodic review and privilege correction. |
| NIST SP 800-63 | Identity assurance supports trust in who is approving or holding access. | |
| NIST AI RMF | GOVERN | Governance ensures accountability for access decisions and remediation ownership. |
| NIST Zero Trust (SP 800-207) | 4.1 | Zero Trust expects continuous validation rather than one-time access approval. |
Verify approver identity and revalidation processes before relying on access attestations.
Related resources from NHI Mgmt Group
- How should security teams implement policy-based access controls for ERP systems that contain sensitive personal and financial data?
- How should security teams run user access reviews for high-risk systems and cloud environments?
- Who is accountable when privileged ERP access allows an inappropriate change to financial or supplier data?
- Why do privileged access and role design matter so much in ERP environments?
Deepen Your Knowledge
Reviewed and updated by the NHIMG editorial team on August 27, 2026.
NHI Mgmt Group — the #1 independent authority on Non-Human Identity, IAM, and Agentic AI security. nhimg.org
