Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 30 Oct 2026. What's built · Install 0.1.0

Values and types · rule

`type.unknown_variant_field`

Variant has no such field.

Area 2, Values and types; not declinable; the next step is usually the agent's.

example

type DeclineReason = Text {    max_length: 200}type PaymentOutcome = Enum {    declined: {        reason: DeclineReason    }}function declined_payment(reason: DeclineReason) -> PaymentOutcome {    return PaymentOutcome.declined {        reason: reason        note: reason    }}

text

error: `PaymentOutcome.declined` has no field `note` --> main.jadpo:14:9   |14 |         note: reason   |         ^^^^ not declared  reason: `PaymentOutcome.declined`'s fields are `reason`.  next: Remove `note`, or declare it on `PaymentOutcome.declined` (agent)  rule: type.unknown_variant_field  help: https://jadpo.dev/docs/errors/type.unknown_variant_fieldcheck failed: 1 error, 1 file

Markdown for agents: /docs/errors/type.unknown_variant_field.md.Built from Jadpo main at a707efb.