From Jiri Sedlacek:
Switchyard composite created, binding is camel-quartz, configured as below:

<quartz:binding.quartz>
<operationSelector operationName="call"/>
<quartz:name>quartz_bean_service</quartz:name>
<quartz:cron>0/5 * * * * ?</quartz:cron>
</quartz:binding.quartz>

When deployed, not so clear exception is thrown:

at org.switchyard.as7.extension.services.SwitchYardService.start(SwitchYardService.java:85)
at org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1811) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
at org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1746) [jboss-msc-1.0.4.GA-redhat-1.jar:1.0.4.GA-redhat-1]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145) [rt.jar:1.7.0_21]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615) [rt.jar:1.7.0_21]
at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_21]
Caused by: org.switchyard.exception.SwitchYardException: org.apache.camel.FailedToCreateRouteException: Failed to create route V1CamelQuartzBindingModel/SimpleService@-1749185328: Route[[From[quartz://quartz_bean_service?cron=0/5%20*%20*%20... because of Failed to resolve endpoint: quartz://quartz_bean_service?cron=0%2F5+%3F due to: Trigger name cannot be null or empty.
at org.switchyard.component.camel.common.handler.InboundHandler.<init>(InboundHandler.java:77)
at org.switchyard.component.camel.common.deploy.BaseBindingActivator.createInboundHandler(BaseBindingActivator.java:71)
at org.switchyard.component.camel.common.deploy.BaseBindingActivator.activateBinding(BaseBindingActivator.java:63)
at org.switchyard.deploy.internal.Deployment.deployServiceBindings(Deployment.java:515)
at org.switchyard.deploy.internal.Deployment.start(Deployment.java:141)
at org.switchyard.as7.extension.deployment.SwitchYardDeployment.start(SwitchYardDeployment.java:106)
at org.switchyard.as7.extension.services.SwitchYardService.start(SwitchYardService.java:78)
... 5 more
Caused by: org.apache.camel.FailedToCreateRouteException: Failed to create route V1CamelQuartzBindingModel/SimpleService@-1749185328: Route[[From[quartz://quartz_bean_service?cron=0/5%20*%20*%20... because of Failed to resolve endpoint: quartz://quartz_bean_service?cron=0%2F5+%3F due to: Trigger name cannot be null or empty.
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:176)
at org.apache.camel.impl.DefaultCamelContext.startRoute(DefaultCamelContext.java:712)
at org.apache.camel.impl.DefaultCamelContext.startRouteDefinitions(DefaultCamelContext.java:1749)
at org.apache.camel.impl.DefaultCamelContext.addRouteDefinitions(DefaultCamelContext.java:656)
at org.apache.camel.impl.DefaultCamelContext.addRouteDefinition(DefaultCamelContext.java:661)
at org.switchyard.component.camel.common.handler.InboundHandler.<init>(InboundHandler.java:75)
... 11 more
Caused by: org.apache.camel.ResolveEndpointFailedException: Failed to resolve endpoint: quartz://quartz_bean_service?cron=0%2F5+%3F due to: Trigger name cannot be null or empty.
at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:469)
at org.apache.camel.util.CamelContextHelper.getMandatoryEndpoint(CamelContextHelper.java:50)
at org.apache.camel.model.RouteDefinition.resolveEndpoint(RouteDefinition.java:186)
at org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:107)
at org.apache.camel.impl.DefaultRouteContext.resolveEndpoint(DefaultRouteContext.java:113)
at org.apache.camel.model.FromDefinition.resolveEndpoint(FromDefinition.java:72)
at org.apache.camel.impl.DefaultRouteContext.getEndpoint(DefaultRouteContext.java:89)
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:851)
at org.apache.camel.model.RouteDefinition.addRoutes(RouteDefinition.java:171)
... 16 more
Caused by: java.lang.IllegalArgumentException: Trigger name cannot be null or empty.
at org.quartz.Trigger.setName(Trigger.java:366)
at org.apache.camel.component.quartz.QuartzComponent.createEndpoint(QuartzComponent.java:149)
at org.apache.camel.component.quartz.QuartzComponent.createEndpoint(QuartzComponent.java:54)
at org.apache.camel.impl.DefaultComponent.createEndpoint(DefaultComponent.java:91)
at org.apache.camel.impl.DefaultCamelContext.getEndpoint(DefaultCamelContext.java:451)
... 24 more

What I found, camel endpoint is treated as URI in org.apache.camel.component.quartz.QuartzComponent.createEndpoint(QuartzComponent.java:149) method, and when quartz:name contains underscore (and probably other chars not allowed in URI), URI.getHost() returns null and this value is then set as trigger name.

This behaviour should be either documented or fixed, users don't have to know how it works internaly and may want to use names with underscores.