expressions_not_enabled

What to do: Use from, const, or default until expressions ship.

Mapping expr entries and route filter/transform are reserved for the expression phase (JSONata, ADR-005).

Shape

{ "error": { "code": "expressions_not_enabled", "message": "…", "hint": "Use from, const, or default until expressions ship.", "docs": "https://postbag.dev/docs/errors/expressions_not_enabled/" } }

All codes are listed on the error reference. Conventions for the envelope, hints and next[] are in the API overview.