BG95-M3 mini PCIE - MQTT protocol issues

Hello everybody,

I’m trying to use MQTT protocol based on BG95&BG77 MQTT Application Note document.
On 6.1 section there is an example to connect to AliCloud. This is the results:

AT+QMTCFG=“aliauth”,0,“oyjtmPl5a5j”,“MQTT_TEST”,“wN9Y6pZSIIy7Exa5qVzcmigEGO4kAazZ”

OK

AT+QMTOPEN=?

+QMTOPEN: (0-5),“host_name”,(0-65535)

OK

AT+QMTOPEN=0,“iot-as-mqtt.cn-shanghai.aliyuncs.com”,1883

OK

+QMTOPEN: 0,0

AT+QMTOPEN?

+QMTOPEN: 0,“iot-as-mqtt.cn-shanghai.aliyuncs.com”,1883

OK

AT+QMTCONN=?

+QMTCONN: (0-5),“clientID”[,“username”[,“password”]]

OK

AT+QMTCONN=0,“clientExample”

ERROR

Why am I get error?

Another question: Is there a cloud broker that give visual information on messages I will post through the BG95 module?
Thanks everybody.
Best Regards,
GS

Dear customer

you need get this client id from ali cloud website first .

any more issue , pls send email to support@quectel.com