• APN : lib_gsm.h
• modbus_error_recovery_mode : modbus.h
• MQTTASYNC_TRACE_LEVELS : MQTTAsync.h
• MQTTCLIENT_TRACE_LEVELS : MQTTClient.h
• MQTTPropertyCodes : MQTTProperties.h
• MQTTPropertyTypes : MQTTProperties.h
• MQTTReasonCodes : MQTTReasonCodes.h