428 Precondition Required

HTTP/1.1 428 Precondition Required
Date: Tue, 07 Oct 2025 09:30:00 GMT
Server: nginx
Content-Type: application/problem+json

{
  "type": "about:blank",
  "title": "Precondition Required",
  "status": 428,
  "detail": "Send If-Match with the ETag you last read."
}