How to troubleshoot "SWITCHYARD033005: Only one switchyard input per implementation is allowed" error?

Issue

• A SwitchYard application is designed to expose the back-end WebService with XSLT transformation and without XSLT transformation with two promoted services from the same Camel Route. When user tries to deploy the application in FSW 6.0.0 it throws the exception as mentioned in the stacktrace below.

...
17:49:22,516 ERROR [org.jboss.msc.service.fail] (MSC service thread 1-1) MSC000001: Failed to start service jboss.deployment.unit."MultiRouteESB-0.0.1-SNAPSHOT.jar".SwitchYardService: org.jboss.msc.service.StartException in service jboss.deployment.unit."MultiRouteESB-0.0.1-SNAPSHOT.jar".SwitchYardService: org.switchyard.SwitchYardException: SWITCHYARD033005: Only one switchyard input per implementation is allowed
        at org.switchyard.as7.extension.services.SwitchYardService.start(SwitchYardService.java:84)
        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_71]
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_71]
        at java.lang.Thread.run(Thread.java:745) [rt.jar:1.7.0_71]
Caused by: org.switchyard.SwitchYardException: SWITCHYARD033005: Only one switchyard input per implementation is allowed
        at org.switchyard.component.camel.deploy.CamelActivator.handleImplementation(CamelActivator.java:103)
        at org.switchyard.component.camel.deploy.CamelActivator.activateService(CamelActivator.java:75)
        at org.switchyard.deploy.internal.Deployment.deployImplementations(Deployment.java:554)
        at org.switchyard.deploy.internal.Deployment.start(Deployment.java:144)
        at org.switchyard.as7.extension.deployment.SwitchYardDeployment.start(SwitchYardDeployment.java:127)
        at org.switchyard.as7.extension.services.SwitchYardService.start(SwitchYardService.java:77)
        ... 5 more
Caused by: org.switchyard.SwitchYardException: SWITCHYARD033005: Only one switchyard input per implementation is allowed
        at org.switchyard.component.camel.deploy.CamelActivator.verifyRouteDefinitions(CamelActivator.java:132)
        at org.switchyard.component.camel.deploy.CamelActivator.handleImplementation(CamelActivator.java:94)
        ... 10 more
...

• How to fix this kind of issue?