Omar Vega [https://community.jboss.org/people/ovegag] created the discussion "Re: How do I make RAR classes visible to separate EAR modules? JBoss 7.1.1.Final, IronJacamar 1.0.16.Final, JDK 6" To view the discussion, visit: https://community.jboss.org/message/816611#816611 -------------------------------------------------------------- After a careful reading https://community.jboss.org/message/626315#626315 https://community.jboss.org/message/626315#626315 and https://community.jboss.org/thread/219118 https://community.jboss.org/thread/219118 and https://docs.jboss.org/author/display/AS71/Class+Loading+in+AS7 https://docs.jboss.org/author/display/AS71/Class+Loading+in+AS7 I was able to fix the issue above by modifying the jboss-deployment-structure.xml on the EAR file as well as the jboss-deployment-structure.xml on the RAR. The contents of the jboss-deployment-structure.xml file on the RAR (sevensys-cloud-adapter-aws.rar): *<?xml version="1.0" encoding="UTF-8"?>* *<jboss-deployment-structure>* *          <deployment>* *                    <exports>* *                              <include path="mx/sevensys/cloud/api**" />* *                              <include path="org/jclouds**" />* *                    </exports>* *                    <dependencies>* *                              <module name="javax.inject.api"/>* *                              <module name="javax.ws.rs.api"/>* *                              <module name="javax.annotation.api"/>* *                    </dependencies>* *          </deployment>* *</jboss-deployment-structure>* The contents of the jboss-deployment-structure.xml file on the EAR: *<?xml version="1.0" encoding="UTF-8"?>* *<jboss-deployment-structure>* *  <ear-subdeployments-isolated>false</ear-subdeployments-isolated>* *  <sub-deployment name="sample-ear-ejb.jar">* *  <dependencies>* *  <module name="deployment.sevensys-cloud-adapter-aws.rar"/>* *  </dependencies>* *  </sub-deployment>* *</jboss-deployment-structure>* -------------------------------------------------------------- Reply to this message by going to Community [https://community.jboss.org/message/816611#816611] Start a new discussion in IronJacamar at Community [https://community.jboss.org/choose-container!input.jspa?contentType=1&...]