_ERROR_NOT_IMPLEMENTED</b>, 
<b>MQTT_ERROR_CONNECTION_REFUSED</b>, 
<b>MQTT_ERROR_SUBSCRIBE_FAILED</b>, 
<br />
&#160;&#160;<b>MQTT_ERROR_CONNECTION_CLOSED</b>, 
<b>MQTT_ERROR_INITIAL_RECONNECT</b>, 
<b>MQTT_ERROR_INVALID_REMAINING_LENGTH</b>, 
<b>MQTT_OK</b> = 1
<br />
 }<tr class="memdesc:gad0c901a8d30691ed0ca17915b691b7e7"><td class="mdescLeft">&#160;</td><td class="mdescRight">An enumeration of error codes. Error messages can be retrieved by calling <a class="el" href="group__api.html#ga47b62bdd24e8b059