| Code | XMPP Error | Type |
| 500 | interna-server-error | WAIT |
| 403 | forbidden | AUTH |
| 400 | bad-requestMODIFY | >|
| 404 | item-not-found | CANCEL |
| 409 | conflict | CANCEL |
| 501 | feature-not-implemented | CANCEL |
| 302 | gone | MODIFY |
| 400 | jid-malformed | MODIFY |
| 406 | no-acceptable | MODIFY |
| 405 | not-allowed | CANCEL |
| 401 | not-authorized | AUTH |
| 402 | payment-required | AUTH |
| 404 | recipient-unavailable | WAIT |
| 302 | redirect | MODIFY |
| 407 | registration-required | AUTH |
| 404 | remote-server-not-found | CANCEL |
| 504 | remote-server-timeout | WAIT |
| 502 | remote-server-error | CANCEL |
| 500 | resource-constraint | WAIT |
| 503 | service-unavailable | CANCEL |
| 407 | subscription-required | AUTH |
| 500 | undefined-condition | WAIT |
| 400 | unexpected-condition | WAIT |
| 408 | request-timeout | CANCEL |
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