S020

An alert payload must be a declared record type with at least one field, and every field must be string, int, float, bool, or a nullable form of those. Declare a record with only those field types and pass its name, or drop payload: for an alert without one.

Failing example

script "conf"

type Tinted {
  price: float
  tint: color
}

alert tinted = alert(payload: Tinted, title: "Tinted")

Corrected example

script "fixed"
type Plain { price: float }
alert plain = alert(payload: Plain, title: "Plain")