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Mark Nottingham, Sanjay Dalal
New problem types and changes to existing ones can be requested using the [registration request interface] or the [HTTPAPI mailing list].
| Type URI | Title | Recommended HTTP Status Code | Reference |
|---|---|---|---|
| about:blank | See HTTP Status Code | N/A | [RFC9457] |
| https://iana.org/assignments/http-problem-types#date | Date Not Acceptable | 400 | [RFC9458, Section 6.5.2] |
| https://iana.org/assignments/http-problem-types#ohttp-key | Oblivious HTTP key configuration not acceptable | 400 | [RFC9458, Section 5.3] |
