HTTP Status Codes

Reference for HTTP status codes returned by Vault endpoints.

Success

Code	Status	Description
200	OK	Request succeeded
201	Created	Resource created (e.g. token)

Code	Status	Common causes
400	Bad Request	Invalid JSON, missing/invalid fields, invalid card number
401	Unauthorized	Missing or invalid API key, expired JWT
403	Forbidden	MFA required, insufficient permissions, account locked
404	Not Found	Token or resource doesn’t exist or was deleted
409	Conflict	Duplicate resource (e.g. application name)
429	Too Many Requests	Rate limit exceeded; use `retry_after_seconds` if present

{
  "success": false,
  "message": "Human-readable error message",
  "data": null
}

For specific messages and troubleshooting, see Common errors. For integration patterns, see Error handling.