Résumé
The request is well-formed but has semantic errors (e.g. validation failed).
Quand cela se produit
Widely returned by REST/JSON APIs when field validation fails.
Causes fréquentes
- Field validation failed (format, range, required)
- Business-rule violation in the payload
Comment résoudre
- Fix the invalid fields per the error details
- Validate input against the API schema
Base dans la spécification