Callback messages might arrive before the initiating transaction is completed. In this case, correlation in Mediator fails. If you have an issue with premature callbacks, you can use the oracle.tip.mediator.callback.correlationWaitDuratino_in_seconds property to set a time period in seconds for which the callback thread waits before retrying the callback.

You define the property in the composite.xml file in the component element that defines the Mediator component. In the example shown below, the wait time before retrying is 15 seconds.

<component name="Mediator1">
    <implementation.mediator src="Mediator1.mplan"/>
    <property name="oracle.tip.mediator.callback.correlationWaitDuration_in_
    seconds">15</property> 
</component>