BIP4408
Severity
30 : Severe error
Message
Could not allocate a thread for timeout processing in AggregateReply node.
Explanation
The AggregateReply node requires a thread to perform timeout processing. This demand has been refused. Normal function cannot continue without this thread.
Response
The operating system may have run low on threads. Try to make more threads available. Try reducing the number of threads used by a message flow by decreasing the value of the 'Additional Instances' attribute from the 'Assignments' panel.