The SIM was not able to attach to the specified network because your SIM has not been activated yet and is in the new state. This is the state that SIMs arrive in when they are shipped and they must be activated first via Console or REST API before they can be used.
Possible Causes
Your SIM is in the new state and is not active.
Possible Solutions
Use the KORE Console or REST API to activate your SIM by setting its status to ready or active .
