I’m trying to use this simulator

I’m encountering an issue when trying to use the ChirpStack Simulator. Upon running the command:

./build/chirpstack-simulator -c chirpstack-simulator.toml

I’ve reviewed the configuration in the chirpstack-simulator.toml file, and I’m connecting to an MQTT server with the address tcp://ip_server:1883. My main question is whether the mosquitto MQTT broker is different from the MQTT gateway backend in ChirpStack. If so, how should I correctly configure the toml file to avoid this “Identifier rejected” error?

I appreciate any help or guidance you can provide to help me resolve this issue.

Thanks in advance!

Were you ever able to figure this out?