Migration & Modernization

What this service covers

What migration & modernization has to get right

  • Migration readiness and transition path assessment
  • SAP S/4HANA system conversion
  • Selective data transition and data migration
  • Custom code, clean core, and extension modernization
  • Integration, data, reporting, and landscape modernization
  • Cutover, validation, and post-migration stabilization
Service introduction

SAP Migration Services for Modernization

A migration is not a system move with a business project attached — it is a business decision that happens to move a system. The technical conversion is rarely the hard part. What decides the outcome is which processes you carry forward, how much history follows you, what becomes of years of custom code, which interfaces survive, and what the business can be asked to absorb. There are three honest routes forward — a new implementation, a system conversion, or a selective data transition — and the right one follows from your landscape, not from a preference. VISCAP is typically engaged before that choice is fixed, and stays until the new landscape is stable in production.

What VISCAP delivers

What VISCAP Delivers Through SAP Migration and Modernization Services

01

Migration readiness and transition path assessment

Before a path is chosen, we establish what is genuinely being moved: the release baseline, the processes in play, the data volumes, the custom code, the add-ons and the interfaces. SAP Readiness Check findings and simplification items are worked through rather than filed — and the output is a transition-path recommendation with the reasoning attached.

  • Current SAP landscape review
  • SAP release and system baseline
  • Business process assessment
  • SAP readiness check findings
  • Simplification-item review
  • Add-on compatibility
  • Data-volume assessment
  • Custom code analysis
  • Integration dependencies
  • Reporting dependencies
  • Business continuity considerations
  • Transition-path recommendation
02

SAP S/4HANA system conversion

A conversion keeps the configuration and history you have spent years building — but only where the ground is prepared first. Simplification items remediated, custom code adapted, add-ons and interfaces assessed, data volume reduced. Only then is the technical conversion and data model change coordinated, tested, reconciled and validated on the other side.

  • SAP ECC system conversion
  • Functional preparation
  • Simplification-item remediation
  • Custom code preparation
  • Add-on and interface assessment
  • Data-volume reduction
  • Technical conversion coordination
  • Data model conversion
  • Testing and reconciliation
  • Cutover planning
  • Post-conversion validation
03

Selective data transition and data migration

Where neither a full conversion nor a clean rebuild fits, selective transition moves only what earns its place — chosen company codes, business units or time slices, master data and open items, with history treated as a decision rather than a default. Restructuring and harmonization happen here, and every mock cycle is reconciled before the next one runs.

  • Selective migration scope
  • Company-code or business-unit selection
  • Time-slice selection
  • Master data migration
  • Open transactional data
  • Historical data requirements
  • Data transformation
  • Organizational restructuring
  • Data harmonization
  • Migration objects
  • Mock migration cycles
  • Validation and reconciliation
  • Archiving and retention considerations
04

Custom code, clean core, and extension modernization

Most SAP estates carry far more custom code than anyone still runs. We inventory it, measure it against actual usage, retire what nothing calls, remediate what S/4HANA requires adapted, and move what remains to in-app extensibility, developer extensibility or side-by-side on SAP BTP against released APIs and events — so the next upgrade is a task, not a programme.

  • Custom development inventory
  • Usage-based custom code analysis
  • Unused code retirement
  • SAP S/4HANA compatibility checks
  • Code remediation
  • In-app extensibility
  • Developer extensibility
  • Side-by-side extensions on SAP BTP
  • Released APIs and events
  • Technical debt reduction
  • Clean core governance
  • Upgrade readiness
05

Integration, data, reporting, and landscape modernization

A migration is the one moment when the interfaces nobody wants to touch are genuinely open. Every SAP and non-SAP connection is inventoried, what has quietly accumulated is rationalized, middleware moves toward API-led integration on the SAP Integration Suite, and reporting and the Fiori user experience are rebuilt on the target landscape — while legacy applications that no longer earn their place are consolidated, archived or retired.

  • SAP and non-SAP integration inventory
  • Interface rationalization
  • SAP integration suite considerations
  • API-led integration
  • Middleware transition
  • Data-flow modernization
  • Reporting inventory
  • SAP fiori and user-experience considerations
  • Analytics modernization
  • System consolidation
  • Legacy application retirement
  • Archive and retention planning
  • Target landscape design
06

Cutover, validation, and post-migration stabilization

Cutover is rehearsed before it is run. Downtime is planned against the business calendar, continuity is covered, and the final cycle follows a script that has already been proven. Then the numbers are reconciled, processes, integrations and security roles validated, and hypercare put behind the users until the defect curve flattens and support takes it on.

  • Cutover strategy
  • Cutover rehearsals
  • Final migration cycle
  • Downtime planning
  • Business continuity
  • Data reconciliation
  • Business data validation
  • Functional validation
  • Integration validation
  • Security and role validation
  • Production deployment
  • Hypercare
  • Defect resolution
  • Performance monitoring
  • Support handover
  • Legacy-system retirement planning
Connected solutions

SAP Solutions Connected to Migration and Modernization

All SAP solutions

SAP S/4HANA

Migration and modernization across finance, procurement, supply chain, manufacturing, sales, projects, asset processes and reporting — the digital core every other move in the landscape is timed against.

Brownfield conversionSelective transitionClean coreSAP Fiori

SAP Cloud ERP Private

An existing SAP ERP landscape modernized inside a cloud environment that still carries system conversion and selective transformation — depth and control kept, the infrastructure handed over.

System conversionSelective transformationPrivate cloud

SAP Cloud ERP

A fit-to-standard cloud path for organizations leaving legacy or non-SAP environments, where standardized processes are the point of the move rather than a compromise inside it.

Fit-to-standardPublic cloudGROW with SAP

RISE with SAP

The transition route for existing SAP ERP customers moving toward SAP Cloud ERP Private — with the commercial, contractual and technical questions that come attached answered before anything is signed.

Transition pathCloud ERP PrivateCommercial evaluation

SAP Business Technology Platform

Where the extensions come off the core: integration, side-by-side development, automation, data and innovation services built against the landscape you are moving to rather than the one you are leaving.

Side-by-side extensionsAutomationData & innovationClean core

SAP Integration Suite

Enterprise integrations, APIs, cloud connectivity and SAP-to-non-SAP data flows rebuilt for the target landscape instead of quietly re-pointed at it and left to age another decade.

Cloud integrationAPI managementSAP & non-SAP flows
Delivery approach

A Controlled Path From Migration Readiness to a Modern SAP Landscape

01

Assess

Review objectives, SAP and non-SAP systems, processes, data, custom code, integrations and reports — then name the constraints, dependencies and continuity risks, and agree the criteria the decision will be made on.

  • Review business and transformation objectives
  • Assess SAP and non-SAP systems
  • Review processes, data, custom code, integrations, and reports
  • Analyze system constraints and dependencies
  • Identify business continuity risks
  • Review readiness findings
  • Establish decision criteria
02

Define

Compare new implementation, system conversion and selective data transition; set the deployment direction, retained processes, data-history requirements, clean core principles and target architecture.

  • Compare new implementation, system conversion, and selective data transition
  • Define deployment direction
  • Confirm retained and redesigned processes
  • Define data-history requirements
  • Establish clean core and extensibility principles
  • Define target integrations and reporting
  • Confirm target architecture
03

Prepare

Remediate readiness findings, cleanse and map data, reduce volume, adapt custom code, prepare interfaces and migration objects, and set the testing, reconciliation and cutover governance.

  • Remediate critical readiness findings
  • Cleanse and map data
  • Reduce unnecessary data volume
  • Review and adapt custom code
  • Prepare interfaces
  • Define migration objects
  • Complete mock migration planning
  • Establish testing and reconciliation criteria
  • Prepare cutover governance
04

Transition

Run the migration or conversion cycles, validate migrated data, test processes and integrations, reconcile financial and operational results, execute cutover and move users into the target environment.

  • Execute agreed migration or conversion activities
  • Run migration cycles
  • Validate migrated data
  • Test processes and integrations
  • Reconcile financial and operational results
  • Execute cutover
  • Confirm production readiness
  • Transition business users into the target environment
05

Stabilize

Hypercare, defect resolution and process monitoring; final reconciliation, handover into AMS or support, legacy retirement, and the clean core and enhancement roadmap that follows.

  • Provide hypercare
  • Resolve migration-related defects
  • Monitor business processes
  • Complete reconciliation
  • Transition into AMS or support
  • Retire or archive legacy applications
  • Prioritize remaining modernization work
  • Establish an enhancement and clean core roadmap

Industries

Manufacturing

Finance, procurement, production, inventory, quality, plant integrations and maintenance moved together

View industry

Consumer Products and FMCG

High-volume sales, distribution, supply chain, finance and external integrations modernized as one

View industry

Pharmaceuticals and Life Sciences

Controlled migration of regulated processes, batch history, traceability, access control and retained data

View industry

Chemicals

Process manufacturing, materials, quality, plant operations and environmental and compliance data

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Professional Services

Projects, resource data, finance, billing, workforce systems and payroll carried across cleanly

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Engineering, Construction and Projects

Projects, work breakdown structures, procurement, subcontractors and long-cycle historical data

View industry
Case study

Selective transition off ECC for a multi-entity process manufacturer

Rather than convert twenty years of history, VISCAP moved four company codes and three years of open and closed data into a clean S/4HANA core — retiring 60% of the custom code on the way and archiving the rest of the history where audit could still reach it.
Case study

One global payroll platform across 14 countries
Case study

SAP and non-SAP systems unified across 30+ countries
Case study

Cloud ERP go-live in five months via GROW with SAP

Frequently Asked Questions

Everything between the current landscape and a stable target one: migration readiness and transition path assessment, S/4HANA system conversion, selective data transition and data migration, custom code and clean core modernization, integration, reporting and landscape modernization, and cutover, validation and post-migration stabilization. A migration engagement is as much about what you deliberately leave behind as what you move.

Three. A new implementation rebuilds processes on SAP standard and brings across only the data that earns it. A system conversion takes the existing system forward with its configuration and history intact. A selective data transition sits between them — carrying chosen entities, processes or time periods into a redesigned target. Landscape complexity, process debt, data quality, custom code and the appetite for change decide which one fits; none of them is universally the safe choice.

A system conversion moves the whole system — configuration, custom code, master data and history — in one technical exercise, so what is good and what is not both come with you. A selective data transition moves only defined scope: particular company codes or business units, a chosen time slice, master data and open items, with the target redesigned rather than inherited. Conversion protects continuity; selective transition buys the chance to restructure and harmonize. The cost sits in different places, which is exactly why the choice belongs in the assessment.

No — data migration is one workstream inside it. A migration also covers process decisions, custom code remediation, add-on and interface treatment, integration and reporting rework, security and role validation, cutover and business readiness. Programmes that treat migration as a data exercise tend to discover the rest of the scope late, when there is far less room to plan around it.

An SAP tool that analyzes your existing system and reports what stands between it and S/4HANA: relevant simplification items, add-on and business function compatibility, custom code impact, data volumes, recommended Fiori apps and integration considerations. It is a strong starting point, not a plan — the findings still have to be interpreted against how your business actually runs, sized, and turned into remediation work with owners against it.

It gets inventoried and measured against real usage, and most estates find a large share of it is no longer called by anyone — that goes. What remains is checked for S/4HANA compatibility and either remediated in place, replaced by standard functionality that now covers it, or rebuilt as an extension: in-app, developer extensibility, or side-by-side on SAP BTP against released APIs and events. The point is not to move the code — it is to arrive with less of it, and with what is left outside the core.

Less than most organizations first ask for. The real requirement is usually statutory retention, audit access and a workable comparative period for reporting — not every open item since the system went live. We set the history requirement against those obligations, then meet the rest through archiving or a retained read-only source. Every additional year carried forward extends migration cycles, testing, reconciliation and downtime, so it should be a decision someone has made rather than a default nobody questioned.

It follows the path and the state of the landscape rather than the size of the company: how many entities and modules are in scope, how much custom code needs remediating, how clean the data is, how many interfaces are in play, and how much downtime the business can absorb. A focused conversion on a well-kept system is a matter of months; a selective transition across multiple entities with restructuring and a modernized integration layer runs longer, in planned waves. We put the phase plan, the gates and each phase's output on the table before mobilization instead of quoting a duration in the abstract.

Yes. We assess whether RISE with SAP and SAP Cloud ERP Private is the right destination for your landscape in the first place, then handle the work that a subscription does not: readiness and remediation, custom code and extension treatment, data scope, integration rework, testing, cutover and stabilization. The commercial model changes who runs the infrastructure — it does not change what has to be true about your system before it moves.

Contact Us

Speak with VISCAP’s migration team about the system you are moving off, the history you need to keep, and the transition path that carries the least risk.

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