Getting ClassNotFoundException while deploying ear in EAP 6.

Issue

• We have abc.ear and it contains ejb jar which is referring to other jars .We created custom modules for those jars and added its dependencies in jboss-deployment-structure.xml file.
  Still we are getting below exceptions while deploying abc.ear.

13:28:15,338 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.deployment.subunit."abc.ear"."xyz.jar".POST_MODULE: org.jboss.msc.service.StartException in service jboss.deployment.subunit."abc.ear"."xyz.jar".POST_MODULE: JBAS018733: Failed to process phase POST_MODULE of subdeployment "xyz.jar" of deployment "abc.ear"
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:166) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1980) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
        at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1913) [jboss-msc-1.1.5.Final-redhat-1.jar:1.1.5.Final-redhat-1]
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_60]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_60]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_60]
Caused by: java.lang.RuntimeException: JBAS018757: Error getting reflective information for class package.name.BeanClass with ClassLoader ModuleClassLoader for Module "deployment.abc.ear.xyz.jar:main" from Service Module Loader
        at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:72) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        at org.jboss.as.server.deployment.reflect.ClassReflectionIndexUtil.findMethod(ClassReflectionIndexUtil.java:53) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        at org.jboss.as.ejb3.deployment.processors.dd.DeploymentDescriptorMethodProcessor.handleStatelessSessionBean(DeploymentDescriptorMethodProcessor.java:99)
        at org.jboss.as.ejb3.deployment.processors.dd.DeploymentDescriptorMethodProcessor.deploy(DeploymentDescriptorMethodProcessor.java:76)
        at org.jboss.as.server.deployment.DeploymentUnitPhaseService.start(DeploymentUnitPhaseService.java:159) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        ... 5 more
Caused by: java.lang.NoClassDefFoundError: package/name/ClassName
        at java.lang.Class.getDeclaredFields0(Native Method) [rt.jar:1.7.0_60]
        at java.lang.Class.privateGetDeclaredFields(Class.java:2436) [rt.jar:1.7.0_60]
        at java.lang.Class.getDeclaredFields(Class.java:1806) [rt.jar:1.7.0_60]
        at org.jboss.as.server.deployment.reflect.ClassReflectionIndex.<init>(ClassReflectionIndex.java:57) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        at org.jboss.as.server.deployment.reflect.DeploymentReflectionIndex.getClassIndex(DeploymentReflectionIndex.java:68) [jboss-as-server-7.4.0.Final-redhat-19.jar:7.4.0.Final-redhat-19]
        ... 9 more
Caused by: java.lang.ClassNotFoundException: package.name.ClassName from [Module "deployment.abc.ear.xyz.jar:main" from Service Module Loader]
        at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:213) [jboss-modules.jar:1.3.3.Final-redhat-1]
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:459) [jboss-modules.jar:1.3.3.Final-redhat-1]
        at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:408) [jboss-modules.jar:1.3.3.Final-redhat-1]
        at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:389) [jboss-modules.jar:1.3.3.Final-redhat-1]
        at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:134) [jboss-modules.jar:1.3.3.Final-redhat-1]
        ... 14 more

• Unable to add custom code to our ear file via module .