As described in [1]:

"I configured custom exception handling for a CXF consumer where I want to use my own processor.

Lile this:

onException(Exception.class)
.handled(false)
.useOriginalMessage()
.process(failureResponseProcessor);

or:

<onException useOriginalMessage="true">
<exception>java.lang.Exception</exception>
<handled><constant>false</constant></handled>
<process ref="failureResponseProcessor"/>
</onException>

If allowStreaming is enabled on the CXF consumer endpoint, my FailureResponseProcessor cannot get the original body (the body part of CachedCxfPayload seems to be empty).

If I set allowStreaming to false, the processor works as expected."

Claus suggested stream-caching, but the user reports it does not help.

[1] https://issues.apache.org/jira/browse/CAMEL-13376