This error appears when attempting to connect to a queue in MQ Explorer.
In this example, the channel name being used is CHANNEL2.
On the MQ server, switch to the mqm user.
~]# su - mqm
Start the MQSC utility for the queue manager (MANAGER02 in this example).
~]# /opt/mqm/bin/runmqsc MANAGER02
Display the channel. In this example, the correct channel name is CHANNEL02. Using CHANNEL02 in MQ Explorer should resolve the error.
display channel(*) CHANNEL(CHANNEL02)
Exit the MQSC utility.
Return to your user account.