ECC to S/4HANA Migration

Practical SAP engineering for complex transformation, integration, data, clean-core, cutover, carve-out and support challenges across the UK and Europe.

Choose the migration path before the path chooses you.

ECC to S/4HANA is not one conversion. Brownfield, greenfield and selective transition make different trade-offs around process change, historical data, custom code, integrations and downtime.

Brownfield

Preserve continuity while remediating incompatible code, obsolete configuration, data issues and integrations.

Greenfield

Reset processes and deliberately decide what data, reports, roles and extensions survive.

Selective transition

Keep the history that matters without carrying every legacy decision forward.

The workstreams that usually decide the outcome

Custom code discovery, ATC findings and remediation sequencing.
Data quality, migration scope and financial reconciliation.
PI/PO, IDoc, RFC, API and third-party integration mapping.
Risk-based testing and business acceptance.
Fiori roles, authorisations and security readiness.
Cutover rehearsal, downtime measurement and rollback criteria.
Business readiness, ownership and hypercare.

Common failure modes

Late interface discovery, underestimated custom code, reconciliation started too late, test environments that do not represent production, unclear cutover ownership and technical completion being mistaken for business readiness.

You do not need a perfect brief.

Tell us what is going wrong, what you are trying to change and what cannot be disrupted.

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