View attachment advertiser-lookup-500-servlet-exception.txt Hi This is the first time I tried to create a call to a CJ Web Service, and I am getting a 500 Servlet Exception. I followed the guidelines presented by Quick Start Guide: http://www.cj.com/webservices/quick-start-guide Then when performing simple test: https://advertiser-lookup.api.cj.com/v3/advertiser-lookup?advertiser-ids=notjoined, I get a 500 Servlet Exception error (See attachment): 500 Servlet Exception [show] java.lang.ClassCastException: java.lang.Class cannot be cast to java.lang.Exception java.lang.ClassCastException: cj.webservices.company.advertiser.Advertiser cannot be cast to cj.webservices.company.publisher.Publisher at cj.webservices.company.publisher.dao.PublisherDaoImpl.findById(PublisherDaoImpl.java:224) at sun.reflect.GeneratedMethodAccessor127.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:597) at org.springframework.aop.support.AopUtils.invokeJoinpointUsingReflection(AopUtils.java:309) at org.springframework.aop.framework.ReflectiveMethodInvocation.invokeJoinpoint(ReflectiveMethodInvocation.java:183) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150) at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:110) at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172) at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:202) at $Proxy104.findById(Unknown Source) What could I be doing wrong? Thanks for any feedback!