The enterprise worked with the experts, who applied a reference-design approach that validates equivalence between the legacy and migrated systems. Real production data is replayed through both and outputs are compared, so regressions surface before go-live rather than after, giving evidence that nothing regressed before cutover.

The approach is reference-design equivalence validation with production-data replay: real production data is run through both the reference design and the migrated S/4HANA system and the outputs are compared to detect regressions. No specific AI model or vendor is established in the record.

A reference design validates that the old and migrated systems produce the same results, real production data is replayed to catch regressions before cutover, and the work addresses the SAP ECC end-of-support deadline with evidence that nothing regressed.

The record does not specify a timeline for the migration or validation work.

It is best suited to enterprises facing a forced ERP migration deadline that must prove, with evidence, that the new system behaves identically to the old one.