MQJMS2013: invalid security authentication supplied for MQQueueManager

Hello,

I'm seeing an issue when I try to run my SoapUI project which basically connects to the WebsphereMQ and sends messages.

I've configured HermesJMS and can connect and send messages to the WebsphereMQ without any issues. However, when I try to run it via SoapUI, I'm getting this error  'MQJMS2013: Invalid security authentication supplied for MQQueueManager'. I have confirmed that the username that I use for the QueueManager is correct. Still, not sure why I'm seeing this error. Any help is much appreciated.