UNKNOWN_FIELD
The request has a member the operation does not define. v3 refuses unknown members rather than ignoring them, so a misspelt member is never silently dropped.
| HTTP status | 400 |
| Error class | ValidationError in TypeScript and Python, *caitlyn.ValidationError in Go, Error::Validation in Rust |
| Retried by the SDKs | No |
What to do
Section titled “What to do”Check the member names against the operation's reference page. An SDK only sends members it knows, so this usually means a hand-built request, or a member newer than the server (the SDKs check that before sending; see Versions).
The error body
Section titled “The error body”Every error is an RFC 9457 problem details object with code set to UNKNOWN_FIELD and type set to this page's address. requestId identifies the request; quote it to Caitlyn support. Errors lists every field.