How can IAM teams tell whether their SAP governance is migration-ready?

How to judge SAP governance readiness before a migration

Readiness is not a slogan about cleaning up roles later. It means the governance model already works in a way that can survive the target architecture, so access decisions, approval paths, and evidence collection still function when ECC-specific behavior is removed. The practical test is whether controls are defined in standard extension points and can be exercised against the future-state landscape, not only in the current one.

A good readiness review separates business policy from technical implementation. If the policy depends on custom code, hidden table logic, or manual compensating steps that will not exist after S/4HANA cutover, the governance design is still coupled to the legacy stack. That coupling creates false confidence because the control may look effective today while failing the moment the migration changes the enforcement layer.

What has to be true for access rules, approvals, and audit trails to be migration-ready?

Three things have to line up. First, the rule logic must be explicit and portable, so role or access decisions can be reproduced in the target environment without rewriting the business intent. Second, approvals must map to a workflow that still has authority after the move, including who can approve, what gets approved, and what evidence is retained. Third, audit trails must remain reconstructable, so reviewers can still explain who requested access, who approved it, and what was granted.

The easiest way to test this is to run the governance design against representative target-state scenarios, not just against historical ECC cases. If a role change, emergency access request, or segregation-of-duties exception can only be processed because of legacy behavior, the control is not yet migration-ready. A readiness test should therefore prove enforceability in the new platform, not just completeness on paper.

That is why governance should be treated as an architecture property, not only as an IAM process. If the target-state system changes the extension model, approval hooks, or available audit signals, the migration plan needs to show where those functions will be re-established. For teams formalising that operating model, NHIMG’s Identity Security Programme Guide is useful for framing governance, ownership, and operating-model decisions across the migration.

Why custom ECC logic is the clearest warning sign

Custom ECC logic is often the strongest indicator that governance is not portable. It usually means policy enforcement was embedded in local exceptions, bespoke validation, or transaction-specific controls that were never meant to survive a platform shift. When those paths disappear, the organisation can lose the very mechanism that made the control appear effective.

The same problem appears in access governance, where teams assume a role design is portable because it worked in the source system. In practice, the control may rely on legacy nuances such as transaction-level checks, implicit role inheritance, or manual review habits that do not translate cleanly into the target application model. The broader migration question is whether the organisation can still prove least privilege, segregation, and accountability after those dependencies are removed.

For SAP-specific identity and access planning, NHIMG’s IAM and Identity Provider Buyer's Guide and Identity Security Programme Guide help teams think through lifecycle, admin control, and governance ownership before the target-state design hardens. For cloud and platform patterns around effective permissions and privileged access, Cloud PAM and CIEM Guide is also relevant.

Practitioner Guidance

What to verify: Test the top access workflows in the target-state environment, including approvals, exception handling, and evidence capture. If the control cannot be demonstrated without ECC-only behavior, treat that control as not ready.

Decision rule: If the governance outcome depends on custom code to enforce policy, redesign the control path before cutover. If the same outcome can be produced through standard extension points and retained audit evidence, the control is a stronger candidate for migration.

What practitioners underestimate: The hardest failure is usually not a missing role mapping, but a missing enforcement point. Teams often validate role content and overlook whether the approval and audit layers still have an operational home after the architecture shift.

Practitioner takeaway: Migration-ready SAP governance is proven when the control still works after you remove the legacy implementation trick, because only portable enforcement gives you real post-cutover assurance.

Related resources from NHI Mgmt Group

• How do compliance teams know whether SAP governance still works after migration?
• How can IAM teams tell whether identity governance is actually working?
• How can IAM teams tell whether access governance is actually working?
• How can IAM teams tell whether an identity platform is actually simplifying governance?