SAP Readiness Check for S/4HANA Conversion

Readiness Check is a SAP cloud-based assessment service. A source ERP/S/4 system runs SAP-provided data collectors, then the generated data is uploaded to a Readiness Check analysis where dashboards summarize conversion-relevant areas. The exact check catalog evolves by version and scenario, but the purpose is consistent: make technical/business impact visible early enough to plan work. Findings can identify relevant simplification items, unsupported or impacted add-ons/business functions, custom-code volume/usage, data volume, interfaces and Fiori-related opportunities. Results are based on collected snapshot data and rules for a chosen target; they must be interpreted by application owners.

Run Readiness Check early during S/4HANA assessment and refresh it as source landscape/data/custom code change materially. Use it to size workstreams, assign owners and identify blockers that require deeper SAP/application analysis. Do not use a green dashboard as permission to skip Simplification Item Check, CVI validation, add-on certification, ATC or rehearsal conversion. Readiness Check is most valuable when findings are converted into a tracked remediation backlog.

Readiness Check complements Maintenance Planner, Simplification Item Catalog/Check, ATC/custom-code migration, sizing tools and SUM/DMO. It aggregates assessment signals but does not execute the technical conversion. Application teams investigate simplification findings, Basis resolves add-ons/technical prerequisites, developers assess custom code, and project management uses the dashboard for planning. Because results are point-in-time, months of development after collection can make parts stale.

A program plans conversion in nine months. Readiness Check flags business functions, 12 relevant add-ons, high custom-code volume and several large tables. The team assigns each to an owner and discovers one third-party add-on will not support the target release, a true schedule blocker. Six months later they rerun the collection because the source has changed significantly and confirm custom-code usage/remediation improved. Production readiness is still decided by mandatory checks and rehearsal conversion, not by the dashboard alone.

Readiness Check is specifically intended to support SAP transformation/conversion assessment and evolves with SAP's target releases and cloud/private scenarios. Always use the current collector instructions and check catalog. Selective transition or Public Edition migration may use different assessments in addition to or instead of classic system-conversion checks.

Architecture/program management coordinates the assessment; Basis runs collectors and technical checks; functional leads interpret simplification/business findings; ABAP owns custom code; vendors own add-on readiness; data teams own volume/archiving candidates.

Simplification Items, Custom Code Migration, ATC and SUM/DMO topics explain how findings turn into actual conversion work. Maintenance Planner determines supported software stack/add-ons.

Production review: For each dashboard finding, record target release, exact scope, owner, severity, remediation decision and evidence that closes it. Preserve the collection date and source-system level so results are not mistaken for current state months later. A useful Readiness Check output is not the dashboard itself but a traceable project backlog with blocked, accepted, remediated and retest states.

Additional validation: Architecture validation for SAP Readiness Check for S/4HANA Conversion: turn the design into a decision record with target edition and release, current-state dependency, supported target mechanism, business criticality, data volume, downtime or migration effect, and ownership after go-live. Include at least one scenario that challenges the preferred option and state the exit criterion for any temporary legacy compatibility. Revalidate against current SAP scope/tool documentation at each major program gate because S/4HANA cloud capabilities and migration tooling evolve faster than long-lived slide decks.