title: Unsatisfied dependencies for type UserGroupCallback : while deploying my application
body: <p>Having following error while deploying an application with Jbpm integrated with zkoss and EJB. can anyone help??? I am using JBoss 7.1.1 final.</p>
  
  <p>error : </p>
  
  <pre><code>Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]
  </code></pre>
  
  <p>here is the stacktrace :</p>
  
  <pre><code>   15:36:06,393 INFO  [org.jboss.solder.exception.control.extension] (MSC service thread 1-2) Adding handler Qualifiers: [@javax.enterprise.inject.Any()] TraversalMode: BREADTH_FIRST Handles Type: class java.lang.Throwable Precedence: -100 [method] public org.jboss.seam.transaction.SimpleTransactionExceptionHandler.markTransactionRollback(CaughtException&lt;Throwable&gt;) to known handlers
      15:36:06,704 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-2) MSC00001: Failed to start service jboss.deployment.unit."NewJbpm2MavenProject-1.0.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."NewJbpm2MavenProject-1.0.war".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]
          at org.jboss.as.weld.services.WeldService.start(WeldService.java:83)
          at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
          at 
  org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.2.GA.jar:1.0.2.GA]
          at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_25]
          at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_25]
          at java.lang.Thread.run(Thread.java:724) [rt.jar:1.7.0_25]
      Caused by: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]
          at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:275)
          at org.jboss.weld.bootstrap.Validator.validateInjectionPoint(Validator.java:244)
          at org.jboss.weld.bootstrap.Validator.validateBean(Validator.java:107)
          at org.jboss.weld.bootstrap.Validator.validateRIBean(Validator.java:127)
          at org.jboss.weld.bootstrap.Validator.validateDecorators(Validator.java:391)
          at org.jboss.weld.bootstrap.Validator.validateDeployment(Validator.java:329)
          at org.jboss.weld.bootstrap.WeldBootstrap.validateBeans(WeldBootstrap.java:366)
          at org.jboss.as.weld.WeldContainer.start(WeldContainer.java:83)
          at org.jboss.as.weld.services.WeldService.start(WeldService.java:76)
          ... 5 more
  
      15:36:06,914 INFO  [org.jboss.as.server] (DeploymentScanner-threads - 2) JBAS015870: Deploy of deployment "NewJbpm2MavenProject-1.0.war" was rolled back with failure message {"JBAS014671: Failed services" =&gt; {"jboss.deployment.unit.\"NewJbpm2MavenProject-1.0.war\".WeldService" =&gt; "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"NewJbpm2MavenProject-1.0.war\".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]"}}
      15:36:06,922 INFO  [org.jboss.as.jpa] (MSC service thread 1-4) JBAS011403: Stopping Persistence Unit Service 'NewJbpm2MavenProject-1.0.war#PersonDEMO-PU'
      15:36:06,992 INFO  [org.jboss.as.server.deployment] (MSC service thread 1-1) JBAS015877: Stopped deployment NewJbpm2MavenProject-1.0.war in 78ms
      15:36:06,994 INFO  [org.jboss.as.controller] (DeploymentScanner-threads - 2) JBAS014774: Service status report
      JBAS014777:   Services which failed to start:      service jboss.deployment.unit."NewJbpm2MavenProject-1.0.war".WeldService: org.jboss.msc.service.StartException in service jboss.deployment.unit."NewJbpm2MavenProject-1.0.war".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]
  
      15:36:06,995 ERROR [org.jboss.as.server.deployment.scanner] (DeploymentScanner-threads - 1) {"JBAS014653: Composite operation failed and was rolled back. Steps that failed:" =&gt; {"Operation step-2" =&gt; {"JBAS014671: Failed services" =&gt; {"jboss.deployment.unit.\"NewJbpm2MavenProject-1.0.war\".WeldService" =&gt; "org.jboss.msc.service.StartException in service jboss.deployment.unit.\"NewJbpm2MavenProject-1.0.war\".WeldService: org.jboss.weld.exceptions.DeploymentException: WELD-001408 Unsatisfied dependencies for type [UserGroupCallback] with qualifiers [@Default] at injection point [[field] @Inject private org.jbpm.services.task.identity.AbstractUserGroupCallbackDecorator.userGroupCallback]"}}}}
  </code></pre>