RESTEASY008205 "Wrong number of arguments" after upgrading to JBoss EAP 7.2.0

Solution Unverified - Updated -


  • RESTful api calls fail, and I see this exception in the log:

    ERROR [io.undertow.request] (default task-6) UT005023: Exception handling request to /SMGASMS/rest/userIds/initialize: org.jboss.resteasy.spi.UnhandledException: RESTEASY008205: JSON Binding serialization error java.lang.IllegalArgumentException: wrong number of arguments
        at org.jboss.resteasy.core.ExceptionHandler.handleException( [resteasy-jaxrs-3.6.1.SP2-redhat-00001.jar:3.6.1.SP2-redhat-00001]
        at org.jboss.resteasy.core.SynchronousDispatcher.writeException( [resteasy-jaxrs-3.6.1.SP2-redhat-00001.jar:3.6.1.SP2-redhat-00001]
        at org.jboss.resteasy.core.SynchronousDispatcher.writeResponse( [resteasy-jaxrs-3.6.1.SP2-redhat-00001.jar:3.6.1.SP2-redhat-00001]


  • Red Hat JBoss Enterprise Application Platform (JBoss EAP) 7.2.0
  • RESTEasy
  • JSON serialization
  • Methods in JSON serialized objects that start with "set" but have more that 1 arg.

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