Accountability sits with the organisation’s identity, SAP, and control owners, not with a vendor still providing mainstream support. Once mainstream maintenance ends, the business is knowingly operating unsupported infrastructure, so internal ownership for risk acceptance, migration planning, and audit response becomes the critical issue.
Why This Matters for Security Teams
An unsupported SAP IDM instance is not a passive technical debt item. It is a live identity control dependency that can fail in ways that directly affect provisioning, deprovisioning, segregation of duties, and audit evidence. The accountability question matters because once mainstream support ends, the organisation is no longer buying a guaranteed vendor response for defects, misconfigurations, or compatibility breakage. The control owner must treat the platform as an internal risk.
This is consistent with the broader NHI problem: identity systems are only as reliable as the governance around them. NHIMG’s Ultimate Guide to NHIs frames non-human identity as an operational security issue, not just an account administration problem. For practitioners, the more important point is that unsupported identity tooling can fail silently until an access review, emergency change, or audit exposes the gap. OWASP’s OWASP Non-Human Identity Top 10 reinforces that identity control failures often become security incidents when lifecycle ownership is unclear. In practice, many security teams discover unsupported IDM risk only after access exceptions, failed recertification, or a regulator asks who approved operating the legacy stack.
How It Works in Practice
Accountability usually splits across three layers. The identity team owns the operational control of SAP IDM, the business or system owner accepts the risk of continuing to run it, and the security or GRC function verifies whether the control failure creates unacceptable exposure. SAP may still be accountable for whatever remains in the support contract, but that is not the same as being responsible for an unsupported deployment’s business risk.
In practical terms, the organisation should document three things: the support status of the instance, the risk acceptance decision, and the migration or compensating control plan. That means mapping dependent processes such as joiner-mover-leaver workflows, privileged access, and certification campaigns to a fallback path if IDM fails. Where control evidence is needed, teams should preserve logs, ticket trails, and sign-offs that show who approved continued operation and for how long.
Current guidance suggests aligning this with zero trust and identity governance principles rather than treating the platform as “business as usual.” The NIST AI Risk Management Framework is not an SAP-specific control set, but its GOVERN function is useful for clarifying ownership, escalation, and accountability for technology risk. For identity lifecycle execution, the most relevant operational lesson from NHIMG’s 52 NHI Breaches Analysis is that failures become costly when expired or unmanaged identities persist longer than expected. The issue is not merely whether SAP can still help; it is whether the enterprise can prove it had a controlled decision to keep running the system. These controls tend to break down when legacy IDM is tightly coupled to downstream SAP landscapes and no one has an executable migration path because the dependency chain is too complex to unwind quickly.
Common Variations and Edge Cases
Tighter accountability often increases operational overhead, requiring organisations to balance governance certainty against migration speed and business continuity. That tradeoff becomes sharper when SAP IDM is embedded in a multi-system landscape, because replacing one control plane can disrupt provisioning, approvals, and audit reports across several applications at once.
There is no universal standard for this yet, but best practice is evolving toward explicit risk acceptance with dated ownership and compensating controls. If the instance is unsupported but still functioning, the organisation should avoid claiming vendor-backed reliability in internal attestations. If there is a third-party integrator involved, that party may own implementation defects, but it does not own the enterprise’s decision to keep an unsupported core platform in production.
One useful benchmark is whether the team can answer, without hesitation, who approves continued operation, who funds replacement, and who signs the exception when access-control failures occur. If those answers are unclear, accountability is already fractured. NHIMG’s The State of Secrets in AppSec is a reminder that fragmented control ownership often correlates with slower remediation and weaker operational confidence, even when teams believe they are covered. Unsupported identity infrastructure fails hardest in environments where ownership is shared in theory but unmanaged in practice.
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 |
|---|---|---|
| OWASP Non-Human Identity Top 10 | NHI-01 | Unsupported identity platforms increase unmanaged NHI lifecycle risk. |
| NIST CSF 2.0 | GV.RM-01 | Risk acceptance and ownership must be explicit for legacy identity systems. |
| NIST AI RMF | GOVERN maps well to accountability for technology risk and exceptions. |
Inventory every SAP IDM-dependent identity and assign lifecycle owners before approving continued operation.
