Testing an SAP S/4HANA Conversion End to End

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Conversion test strategy card

• Write a test question for every iteration: sandbox, CMD, CMQ, mocks, dress rehearsal, production.
• Run the same checks each iteration; use production copies as early as possible.
• Technical gate: SUM clean, follow-on activities verified, SDMI complete, smoke checks passed.
• Finance: close period, pre-checks, before/after extracts with the same reports, zero tolerance unless explained.
• Document every accepted migration error with cause, follow-up and Dan's acceptance.
• Map custom code findings to processes; retire unused code; test by depth of change and criticality.
• Time every runbook step in every mock; measure business downtime, not just technical.
• Keep buffer for validation and a rollback decision point.
• Go/no-go criteria: specific, measurable, owned, agreed before and rehearsed in the dress rehearsal.
• Accept the conversion after hypercare checks; clean up obsolete data only after validation.