{
  "$context": "https://schema.org.ai",
  "$type": "ErrorType",
  "$id": "https://epcis.dev/errors/unknown-verb",
  "slug": "unknown-verb",
  "title": "Unknown verb",
  "status": 404,
  "retryable": false,
  "costed": false,
  "door": "epcis.dev",
  "doors": [
    "epcis.dev",
    "barcoding.dev",
    "transactions.dev",
    "worklists.dev",
    "visibility.cloud",
    "visibility.associates",
    "id.org.ai"
  ],
  "summary": "The named verb is not served by this door. Fail closed on unknown identifiers: an unknown verb is an error, never a guess, and never the nearest verb this door does serve.",
  "remediation": "Read the door's verb portfolio and call one of its verbs by its exact name. Universal verbs (get, list, create, update, delete) are cells in a matrix, not portfolio entries — §4.6.",
  "derivedFrom": [
    "docs/specs/shared-surface.md §4.2",
    "docs/specs/shared-surface.md §4.6",
    "#249"
  ]
}