Resolution: In the Designer project for TIBCO ActiveMatrix Adapter for WebSphere MQ 6.2.x, if checking “use MQ Client mode”, the adapter will connect to the MQ queue manager with the MQSERVER Connection String specified in the “parameter for test connection”. If unchecking the “use MQ Client mode” in the adapter project in Designer, the adapter will look for the environment variable MQSERVER and connect to the queue manager with it. The MQSERVER environment variable can be defined in admqs.tra with tibco.env.MQSERVER.
If checking the "use MQ client mode" in Designer, and the transport type is specified in lowercase (e.g. serverConnChn1/tcp/192.168.69.44(1412)) in "Parameters for test connection", the adapter will throw the error during startup and will fail to establish the connection to the MQ server.
If unchecking the "use MQ client mode" in Designer and using the one from tibco.env.MQSERVER in which the transport type is given in lowercase (e.g. serverConnChn1/tcp/192.168.69.44(1412)), there will be no issue establishing the connection during the adapter startup. When defining the MQSERVER connection string in “parameter for test connection”, make sure the transport type is defined in uppercase.