Book an SAP Infrastructure Modernization Audit: A 2026 Guide

Table of Contents

• Why Your Organization Needs an SAP Infrastructure Modernization Audit
• What an SAP Infrastructure Modernization Audit Actually Assesses
• SAP ECC Custom Code Analysis: Understanding Your Technical Debt
• SAP S/4HANA Readiness Assessment: Evaluating Your Migration Potential
• Building Your SAP Infrastructure Modernization Roadmap
• SAP Modernization Audit Checklist: Preparing Your Organization
  • 1. System and architecture evidence
  • 2. Custom code and modification evidence
  • 3. Data quality and volume evidence
  • 4. Security, compliance, and control evidence
  • 5. Performance and capacity evidence
  • 6. Commercial and organizational evidence
• How to Book and Select an SAP Infrastructure Modernization Audit Provider
  • Step 1: Define the engagement model you actually need
  • Step 2: Write a scope statement the provider must respond to
  • Step 3: Evaluate providers on four axes
  • Step 4: Understand the cost drivers
  • Step 5: Agree on timeline and governance
  • Step 6: Contract for the deliverables, not the effort
  • Step 7: Plan for what happens after the audit
• Conclusion: From Audit to Action
• Frequently Asked Questions

Last Updated: October 16, 2026

Why Your Organization Needs an SAP Infrastructure Modernization Audit

Your SAP landscape has accumulated decades of custom code, patches, and workarounds, and most organizations running legacy SAP ECC systems don’t know what they’re paying to maintain.

The stakes are concrete. According to valantic’s 2026 research on SAP transformation, organizations in German-speaking countries have moved SAP landscape transformation into the implementation and stabilization phase.

An audit does three things: it inventories what you have, quantifies your technical debt, and builds a realistic roadmap for modernizing in place or migrating to S/4HANA.

What an SAP Infrastructure Modernization Audit Actually Assesses

Current-state discovery maps your landscape: SAP modules and versions, user counts, custom developments, third-party integrations, and hardware and cloud infrastructure, a documented inventory with evidence, not guesswork.

The audit also evaluates governance and security controls. SAP’s compliance and audit frameworks define the baseline for what “secure and compliant” means in your industry.

Finally, a proper audit assesses scalability and performance.

SAP ECC Custom Code Analysis: Understanding Your Technical Debt

Custom code is where most organizations discover their true technical debt. SAP ECC systems often contain thousands of custom ABAP objects, enhancements, and modifications built over decades.

A custom code analysis audit inventories every custom object, function modules, user exits, BADI implementations, enhancements, modifications, and categorizes them by business criticality.

The real insight is understanding what each piece of custom code does and whether standard SAP functionality can replace it.

SAP S/4HANA Readiness Assessment: Evaluating Your Migration Potential

An S/4HANA readiness assessment tells you whether your organization is ready to migrate and what work must happen first.

Data quality is the biggest blocker for most migrations.

The assessment also evaluates which custom code can migrate as-is, which needs modification, and which should be replaced with standard functionality, determining your migration scope and effort.

Infrastructure readiness means evaluating whether your planned target environment (cloud, private cloud, or hybrid) can support your workload, database sizing, network bandwidth, storage capacity, disaster recovery.

Building Your SAP Infrastructure Modernization Roadmap

SAP’s ERP modernization roadmap for finance teams structures the approach into three phases: discover and assess, design and align, then prepare.

The roadmap identifies which systems migrate first, which can be decommissioned, and which stay as-is, sequencing highest-value or highest-risk systems first.

A realistic roadmap includes effort estimates, timelines, and resource requirements, plus dependencies and risks with mitigation strategies.

Roadmap Phase	Focus Area	Key Deliverable	Timeline
Discover & Assess	Current state inventory	Audit report with findings	4-8 weeks
Design & Align	Future architecture	Detailed migration plan	6-12 weeks
Prepare	Readiness activities	Go/no-go decision	8-16 weeks
Execute	Migration implementation	Production cutover	12-24 months

SAP Modernization Audit Checklist: Preparing Your Organization

Most audit delays are caused by the client not having evidence ready when fieldwork starts. A well-prepared organization can compress discovery by weeks; an unprepared one can double the engagement cost while consultants wait for access, documentation, or stakeholder time.

The checklist below is organized by evidence category, because that is how a real audit consumes information. Work through it before you sign an engagement letter.

1. System and architecture evidence

Gather the raw inventory data first. Auditors will ask for:

• SAP system list with SIDs, versions, kernel levels, and support pack stacks for ECC, BW, PI/PO, Solution Manager, and satellite systems.
• Landscape diagrams showing DEV, QAS, PRD, sandbox, and any training or archive clients.
• OS, database, and hardware specs for every production and non-production host, including virtualization platform and hypervisor versions.

If diagrams don’t exist, don’t draw them from memory, export them from Solution Manager, your CMDB, or your monitoring tool. Auditors can work with imperfect data, but not data that contradicts itself.

2. Custom code and modification evidence

Most organizations underestimate this effort. Before the audit, run a system measurement or use SAP’s ABAP Test Cockpit, Custom Code Lifecycle Management, or a third-party scanner to produce:

• A complete object list: reports, function modules, classes, enhancements, BADIs, user exits, and modifications to standard objects.
• Usage statistics: which objects ran in the last 12 months, by which users, and how often.
• Modification flags and the SAP Note or support pack level at which each modification was last validated.

A common pattern is that 20-30% of custom objects haven’t been executed in over a year. Bring that to the table yourself and the audit moves faster, focusing on code that actually matters.

3. Data quality and volume evidence

S/4HANA readiness depends heavily on data. Prepare:

• Table size reports for the largest 20-30 tables, including growth trend over the last 24 months.
• Master data counts for customers, vendors, materials, and business partners, with duplicate estimates if available.
• Data archiving status: what has been archived, what retention rules apply, and what is still in the productive database.

4. Security, compliance, and control evidence

Auditors test controls, not just read policies. Have these ready:

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• Current role and authorization concept, including any segregation-of-duties conflicts already identified.
• Recent internal or external audit reports, including SOC 1/SOC 2, ISO 27001 certificates, and regulator findings.
• Change management records: transport logs, emergency change procedures, and approval trails for the last 12 months.

5. Performance and capacity evidence

Infrastructure decisions depend on real numbers, not vendor benchmarks. Collect:

• Average and peak CPU, memory, and I/O utilization for production systems over the last 12 months.
• Database response times and the top 10-20 long-running or high-load transactions.
• Batch window durations and any jobs that regularly run past their SLA.

6. Commercial and organizational evidence

Finally, the audit needs context on why you’re doing this:

• Current SAP licensing and maintenance costs, including indirect access or digital access exposure.
• Hosting or data center costs, broken down by system if possible.
• Named stakeholders for basis, development, functional, security, finance, and the business, with confirmed availability windows.

• System inventory, landscape diagrams, and hosting contracts
• Custom code object list with usage statistics and modification flags
• Interface inventory and middleware documentation

If you can’t complete this checklist, that’s itself a finding: the audit will need a discovery phase before assessment, and it reveals your documentation gaps. Both are useful, but cheaper to close before the meter starts running.

How to Book and Select an SAP Infrastructure Modernization Audit Provider

Booking an audit is a procurement exercise, not a vendor relationship decision. The organizations that get the most value from an SAP infrastructure modernization audit define scope, evaluation criteria, and commercial terms before talking to a single provider.

Step 1: Define the engagement model you actually need

There are three common, non-interchangeable models:

• Fixed-scope assessment. A defined deliverable, typically a current-state report, a readiness assessment, or a custom code analysis, with a fixed price and timeline. Best when you already know what you want to learn.
• Time-and-materials discovery. An open-ended engagement where the auditor follows the findings. Best when you suspect the landscape is messier than leadership believes, but it requires tight governance to avoid scope creep.
• Phased program with gates. An initial assessment followed by optional design, roadmap, and remediation phases, each gated by a go/no-go decision. Best for large landscapes where the full modernization budget is not yet approved.

Most mid-size SAP ECC estates, 500 to 5,000 users with a moderate custom code footprint, fit a fixed-scope assessment plus an optional roadmap phase. Very large or heavily customized landscapes need the phased model, because the first phase surfaces issues that change everything after it.

Step 2: Write a scope statement the provider must respond to

A vague RFP produces vague proposals that are impossible to compare. Your scope statement should specify:

• Systems in scope, by SID and version.
• Whether custom code analysis is included, and if so, whether it covers usage statistics and modification analysis or just an object inventory.
• Whether data quality assessment is included, and at what depth.

If a provider won’t respond to a written scope, that signals how they’ll run the engagement.

Step 3: Evaluate providers on four axes

Industry experience matters, but it isn’t the only filter. Score each provider on:

1. Relevant SAP experience. Ask for the specific modules, versions, and database platforms their team has audited in the last 24 months. General SAP experience is not the same as experience with your landscape.
2. Technical depth. Ask who will actually do the work. If the answer is a partner or subcontractor you have not met, that is a risk. Request CVs for the named lead and the hands-on analysts.
3. Independence. A provider that also sells migration, hosting, or managed services has a commercial interest in the findings. Ask how they separate audit conclusions from downstream sales; some organizations split the audit and implementation across two vendors for this reason.
4. Methodology and tooling. Ask what tools they use for custom code analysis, data profiling, and infrastructure assessment. Providers who rely only on interviews and document review will miss things automated analysis catches.

Step 4: Understand the cost drivers

Audit pricing is driven by five variables, not a single day rate:

• Landscape size. Number of systems, clients, and production instances.
• Custom code volume. Thousands of custom objects take longer to analyze than hundreds.
• Data volume. Large tables and poor archiving increase profiling time.

The audit itself is a small fraction of the total modernization budget, most practitioners put it in the low single digits, but the findings can shift that budget by an order of magnitude either way. That asymmetry argues for auditing before committing to a migration plan.

Step 5: Agree on timeline and governance

A typical fixed-scope infrastructure and readiness assessment runs four to twelve weeks depending on landscape size, with the first one to two weeks on access and evidence collection. Build in:

• A kickoff with named stakeholders from basis, development, functional, security, and finance.
• Weekly status calls with a written progress note.
• A mid-engagement checkpoint where preliminary findings are shared so you can correct misunderstandings early.

Step 6: Contract for the deliverables, not the effort

Your statement of work should specify:

• The exact deliverables and their format.
• Acceptance criteria for each deliverable.
• Who owns the raw data and analysis outputs after the engagement.

Step 7: Plan for what happens after the audit

The audit isn’t the deliverable, the remediation roadmap is. Before signing, confirm the engagement includes a prioritized findings list with owners, effort estimates, and a sequencing recommendation, and that the provider will present it to budget holders.

A practical structure: contract the assessment as a fixed-scope phase and hold roadmap and remediation as separately priced options. That gives you a natural decision point once you see the findings and keeps the auditor honest about phase one.

Conclusion: From Audit to Action

An SAP infrastructure modernization audit is the difference between modernization that works and modernization that costs twice as much for half the value.

At Kagool, we’ve guided organizations through this assessment across manufacturing, aerospace, energy, and retail.

The next step is straightforward: define your audit scope, select a provider with industry experience and technical depth, and schedule your assessment.

Contact us to discuss your SAP modernization audit and build a data-driven roadmap for your transformation.

Frequently Asked Questions

What is included in an SAP infrastructure modernization audit?

An SAP infrastructure modernization audit evaluates your current SAP environment across technical, business, and compliance dimensions. It assesses legacy system limitations, custom code dependencies, cloud readiness, security controls, and scalability constraints. The audit identifies which workloads are candidates for S/4HANA migration, which should remain on-premise or move to hybrid cloud, and what remediation work is needed before migration. The deliverable is a prioritized roadmap with risk assessments and cost-benefit analysis.

How long does an SAP infrastructure modernization audit typically take?

Audit duration depends on system complexity, data volume, and scope. A standard assessment for a mid-sized manufacturing organization with legacy ECC systems typically takes 4-8 weeks from discovery to final report delivery. Organizations with multiple regional systems, extensive custom code, or complex integrations may require 8-12 weeks. The timeline includes current-state discovery, stakeholder interviews, technical analysis, compliance review, and roadmap design. Kagool provides a detailed engagement timeline during the scoping phase.

Can an SAP infrastructure modernization audit identify unused custom code that can be eliminated?

Yes. SAP ECC custom code analysis is a core audit component. Auditors use static code analysis, usage tracing, and business process mapping to identify orphaned custom developments, redundant functionality, and code that duplicates standard SAP features. This analysis reveals which custom code is business-critical, which can be replaced by S/4HANA standard functionality, and which should be retired. Eliminating unnecessary code reduces migration effort, lowers ongoing maintenance costs, and simplifies your post-migration system landscape.

How should we prepare for an SAP infrastructure modernization audit?

Preparation involves three key areas. First, compile system documentation: current SAP versions, hardware specifications, network architecture, and integration points. Second, gather business context: key user workflows, compliance requirements, and strategic objectives for modernization. Third, identify stakeholders from IT operations, application teams, finance, security, and business units for interview participation. Kagool provides a pre-engagement checklist to ensure your team has the right information and access ready before the audit begins, reducing timeline and improving audit depth.