package.wire_invalid

Field says how it is sent in a way it can't.

Area 11, External services; not declinable; the next step is usually the agent's.

A provider package's field says how it is sent with wire:, one of the built-in encodings, or with its package's own decode: and encode: functions, given together. Either is refused outside a provider package, both on one field, an encoding that doesn't hold the field's type or Wire.minor_units without the field's one currency, and a function that isn't the package's or doesn't take and give the right types. wire_parts: is refused on a type not made of parts, beside another way of sending the field, with a part left out, unknown or given twice, or a spelling that isn't text.

An encoding holds the types its provider sends that way:

/// A parcel and where it is.public type Parcel = Object {    status: Text    collected_on: Text {        wire: Wire.unix_seconds    }}

  |5 |         wire: Wire.unix_seconds  |               ^^^^^^^^^^^^^^^^^ a `Text` field