An HTTPS record lists a mandatory parameter that it does not have.

SVCB_MANDATORY_MISSING · Severity: Error

• ErrorSVCB_MANDATORY_MISSING

  An HTTPS record lists a mandatory parameter that it does not have.

  The mandatory parameter names keys a client must understand. A key that is listed there but missing from the record makes the record malformed, and clients ignore it (RFC 9460 section 8).

  Recommendation: Add the parameter or remove it from mandatory.

Reported by

• HTTPS record check

Available through the API

• HTTPS record check API

Related findings

• Warning SVCB_ALIAS_CONFLICT An HTTPS AliasMode record sits beside other HTTPS records.
• Warning SVCB_ALIAS_WITH_PARAMS An HTTPS AliasMode record has parameters, which clients ignore.
• Error SVCB_ALPN_MISSING An HTTPS record has no-default-alpn but no alpn parameter.
• Info SVCB_ECH The HTTPS record publishes an Encrypted Client Hello configuration.
• Error SVCB_INVALID An HTTPS record cannot be read.
• Info SVCB_NOT_FOUND The name publishes no HTTPS record.

All findings