This is where the design becomes a precise, table-by-table specification. The agent writes down exactly how each field is calculated and where it comes from — the document your team reviews before any code is written.
An STTM — a Source-to-Target Mapping — is the detailed recipe for every table: which source columns feed it, how each value is transformed, what gets joined, and what gets filtered out. The agent produces this mapping for each table in the design, then delivers it as a clean spreadsheet your analysts can review, comment on, and approve. It's the checkpoint that lets the business confirm the logic before code exists.
Review happens here, not after delivery. Because the mapping is captured in plain Excel, business and technical reviewers can agree on the logic up front — catching misunderstandings while they're still cheap to fix.
Watch the STTM Generation Agent map every field from source to target and package it into a review-ready workbook.