# Nested record mapping with guarded patches

Build-time release reference. Runtime readiness, deployment, payment settlement and external indexing are not evaluated here. Prices are proposed; this file cannot authorize execution or payment.

Construct nested destination records from explicit copy, literal and exact-string lookup rules. Return bounded provenance and optional root-test-guarded RFC 6902 patches. Object destinations only; no implicit coercion, expressions, array expansion, writes or source authenticity checks.

Release: 0.29.0. Built: 2026-10-06T15:38:00Z.

## Choose for
- Map supplied records to nested object destinations using a bounded declarative mapping

## Outside this profile
- Flat field selection only; use records-project
- General expressions, recursive array mapping, joins, coercion or redaction
- Executing code, writing files, environment changes, network requests, publishing or deployment

Proposed nominal USD 0.005 per successful call; payer fees excluded. No verified runtime availability.

- [Exact release contract](/reference/services/records-map-transform.json)
- [Input schema](/reference/schemas/records-map-transform.input.json)
- [Output schema](/reference/schemas/records-map-transform.output.json)
- [Fixed example](/reference/examples/records-map-transform.json)
- [Complete HTML reference](/discover/tools/records-map-transform)