generated: '2026-07-18'
method: derived
source: >-
  Live probe of https://s3.cubbit.eu (HTTP responses observed at profiling time)
  plus the AWS S3 error model that DS3 implements.
description: >-
  Cubbit DS3 returns AWS S3-style errors as an XML envelope. The gateway also
  emits a Cubbit-specific numeric error code in an x-error-code response header
  (observed value 0011 on an unauthenticated request to the endpoint root).
  Because DS3 is S3-compatible, the full error set follows the AWS S3 error
  codes; the entries below are the ones directly observed or implied by the
  documented, supported operation surface.
format: s3-xml
envelope:
  content_type: application/xml
  fields: [Code, Message, Resource, RequestId]
  vendor_header: x-error-code
problems:
- http_status: 405
  code: MethodNotAllowed
  observed: true
  note: Returned for an unsupported method against the endpoint root; x-error-code 0011 observed.
- http_status: 403
  code: AccessDenied
  observed: true
  note: Returned for unauthenticated/unauthorized S3 requests.
- http_status: 403
  code: SignatureDoesNotMatch
  observed: false
  note: Standard S3 SigV4 signature mismatch.
- http_status: 404
  code: NoSuchBucket
  observed: false
- http_status: 404
  code: NoSuchKey
  observed: false
- http_status: 400
  code: InvalidAccessKeyId
  observed: false