An Authorised Representative is a person or entity formally empowered to act on behalf of another party in a defined legal, contractual, or operational scope. In identity governance, the role can approve actions, sign documents, or manage access decisions, so controls must define authority boundaries, accountability, and revocation processes.
What an Authorised Representative Does in Identity and Access Governance
An authorised representative is not just a proxy title, it is a formally bounded delegation. In identity governance, the role only has meaning when the scope of authority, the permitted actions, and the accountability chain are explicit.
That distinction matters because representatives can approve transactions, sign on behalf of a principal, or make access decisions that carry real security and legal consequences. If the scope is vague, delegated authority can be misused as though it were full ownership.
Authority Boundaries and Delegated Decision-Making
The core control question is what the representative is allowed to do, for whom, and under what conditions. A well-designed model separates representation from ownership, so the delegate can act without silently inheriting every privilege of the represented party.
This is where organisations should distinguish legal authority, operational authority, and access authority. A person may be able to sign one class of document, approve one workflow, or manage one account family, while remaining blocked from unrelated systems or higher-risk actions.
Accountability, Evidence, and Reviewability
Because the role acts on behalf of someone else, traceability is essential. The organisation should be able to show who appointed the representative, what authority was granted, what evidence supports that grant, and when it must be reviewed or expired.
That is especially important when the role is used in access governance or privileged workflows. Representative status should be visible in approvals, audit logs, and entitlement records so reviewers can tell whether an action was taken directly or through delegated authority.
Revocation, Change Control, and Failure Conditions
Authorised representation should be treated as a lifecycle state, not a permanent attribute. If the mandate ends, the business relationship changes, or the legal basis expires, the authority must be withdrawn quickly and across every system that recognises it.
Common failure conditions include stale delegation, unclear substitution chains, and representatives acting outside the original scope. The safest model is narrow authority, time-bounded where possible, with clear triggers for review, renewal, and removal.
Risk and Threat Considerations
An authorised representative concentrates trust in a single person or entity, so any weakness in appointment, scope control, or revocation can become an access and accountability problem. If the delegation is too broad, it can enable unauthorised decisions that appear legitimate because they were made under an approved role.
Failure mechanism: Weak or stale delegation records let a representative retain authority after the principal relationship changes, or let them exceed the intended scope without immediate challenge.
Impact: Incorrect approvals, improper signing, privilege abuse, audit gaps, and difficult-to-reconstruct disputes over who was actually authorised to act.
Standards & Framework Alignment
This section maps relevant standards and security frameworks to the operational risks and controls described in this guidance.
NIST SP 800-53 Rev 5 sets the technical controls, while ISO/IEC 27001:2022 defines the regulatory obligations.
| Framework | Control / Reference | Relevance |
|---|---|---|
| NIST SP 800-53 Rev 5 | AC-2 — Account Management | Authorised representatives are governed identities with defined permissions and lifecycle control. |
| AC-3 — Access Enforcement | The role exists to permit specific actions while preventing broader, unauthorised use of delegated power. | |
| AU-2 — Event Logging | Delegated approvals and actions need auditability to prove who acted and under what authority. | |
| Recommendation — Define and review delegated account authority so representative access stays limited and current. Enforce explicit authorization rules that constrain each representative to approved actions only. Log representative approvals and actions so delegation is traceable during review and investigation. | ||
| ISO/IEC 27001:2022 | A.5.18 — Access rights | Delegated authority requires controlled granting, review, and removal of access rights. |
| A.5.3 — Segregation of duties | Representation can concentrate approval and execution power, so duties should remain separated where possible. | |
| Recommendation — Apply formal access-rights review and removal processes to delegated representatives. Separate approval, execution, and review duties so no representative can control the full chain alone. | ||
Practitioner Guidance
Governance implication: Treat authorised representation as a governed delegation artefact, not an informal business courtesy. The appointment should specify scope, duration, approval authority, and the systems where the representation is recognised.
Practitioner note: The strongest control is often not more trust, but narrower trust. If a representative only needs to approve one class of action, do not let the role double as a general admin or blanket decision-maker.