Unspecified Error

The operation failed but the sender does not wish to reveal the reason, or none of the other reason codes apply. Used in CONNACK, PUBACK, PUBREC, SUBACK, UNSUBACK, and DISCONNECT packets.

References

docs.oasis-open.org/mqtt/mqtt/v5.0/os/mqtt-v5.0-os.html

In this namespace

← previous TopicNameInvalid Topic Name Invalid next → UnsupportedProtocolVersion Unsupported Protocol Version

SubscriptionIdentifiersNotSupported Success TopicAliasInvalid TopicFilterInvalid TopicNameInvalid UnspecifiedError UnsupportedProtocolVersion UseAnotherServer WildcardSubscriptionsNotSupported