IBM MQ Input/Output Data(4.2)
If the IBM MQ collection agent is configured to read connection parameters dynamically, it will deliver and expect a connection UDR during initialization. Depending on the configuration, the connection UDR can be of the following types:
MQConnectionInfo
 if Queues has been selected as Connection Mode
MQConnectionInfoTopic
 if Topics has been selected as Connection Mode
MQConnectionInfoDurableTopic
 if Durable Subscriptions has been selected as Connection Mode
If the IBM MQ agent is configured for Queues, messages are delivered as MQMessage UDRs, while Topics and Durable Subscriptions will deliver messages as MQMessageTopic and the agent expects the same UDR type back.
All UDRs are described in IBM MQ UDRs(4.2).