Client throws FalconWebException irrespective of type of error

ERROR: Bad Request;ua1/org.apache.falcon.FalconWebException::null
ua2/org.apache.falcon.FalconWebException::null

2016-01-14 09:38:37,101 INFO  - [45694243@qtp-477289012-44 - 82747686-0d1b-4d20-b0ec-186be5724112:dataqa:POST//entities/schedule/process/processMerlinNative] ~ Configuring client with /mnt/falcon/prism/conf/prism.keystore (SecureHTTPChannel:56)
2016-01-14 09:38:37,837 ERROR - [45694243@qtp-477289012-44 - 82747686-0d1b-4d20-b0ec-186be5724112:dataqa:POST//entities/schedule/process/processMerlinNative] ~ Request failed: 400 (HTTPChannel:121)
2016-01-14 09:38:37,839 ERROR - [45694243@qtp-477289012-44 - 82747686-0d1b-4d20-b0ec-186be5724112:dataqa:POST//entities/schedule/process/processMerlinNative] ~ Request failed (HTTPChannel:129)
org.apache.falcon.FalconWebException
	at org.apache.falcon.FalconWebException.newAPIException(FalconWebException.java:62)
	at org.apache.falcon.FalconWebException.newAPIException(FalconWebException.java:54)
	at org.apache.falcon.resource.channel.HTTPChannel.invoke(HTTPChannel.java:122)
	at org.apache.falcon.resource.proxy.SchedulableEntityManagerProxy$10.doExecute(SchedulableEntityManagerProxy.java:504)
	at org.apache.falcon.resource.proxy.SchedulableEntityManagerProxy$EntityProxy.execute(SchedulableEntityManagerProxy.java:773)
	at org.apache.falcon.resource.proxy.SchedulableEntityManagerProxy.schedule_aroundBody14(SchedulableEntityManagerProxy.java:507)
	at org.apache.falcon.resource.proxy.SchedulableEntityManagerProxy$AjcClosure15.run(SchedulableEntityManagerProxy.java:1)
	at org.aspectj.runtime.reflect.JoinPointImpl.proceed(JoinPointImpl.java:149)
	at org.apache.falcon.aspect.AbstractFalconAspect.logAroundMonitored(AbstractFalconAspect.java:51)
	at org.apache.falcon.resource.proxy.SchedulableEntityManagerProxy.schedule(SchedulableEntityManagerProxy.java:488)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.lang.reflect.Method.invoke(Method.java:497)
	at com.sun.jersey.spi.container.JavaMethodInvokerFactory$1.invoke(JavaMethodInvokerFactory.java:60)
	at com.sun.jersey.server.impl.model.method.dispatch.AbstractResourceMethodDispatchProvider$TypeOutInvoker._dispatch(AbstractResourceMethodDispatchProvider.java:185)
	at com.sun.jersey.server.impl.model.method.dispatch.ResourceJavaMethodDispatcher.dispatch(ResourceJavaMethodDispatcher.java:75)
	at com.sun.jersey.server.impl.uri.rules.HttpMethodRule.accept(HttpMethodRule.java:288)
	at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
	at com.sun.jersey.server.impl.uri.rules.ResourceClassRule.accept(ResourceClassRule.java:108)
	at com.sun.jersey.server.impl.uri.rules.RightHandPathRule.accept(RightHandPathRule.java:147)
	at com.sun.jersey.server.impl.uri.rules.RootResourceClassesRule.accept(RootResourceClassesRule.java:84)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1469)
	at com.sun.jersey.server.impl.application.WebApplicationImpl._handleRequest(WebApplicationImpl.java:1400)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1349)
	at com.sun.jersey.server.impl.application.WebApplicationImpl.handleRequest(WebApplicationImpl.java:1339)
	at com.sun.jersey.spi.container.servlet.WebComponent.service(WebComponent.java:416)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:537)
	at com.sun.jersey.spi.container.servlet.ServletContainer.service(ServletContainer.java:699)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
	at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1221)
	at org.apache.falcon.security.FalconAuthorizationFilter.doFilter(FalconAuthorizationFilter.java:108)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.falcon.security.FalconAuthenticationFilter$2.doFilter(FalconAuthenticationFilter.java:188)
	at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:572)
	at org.apache.hadoop.security.authentication.server.AuthenticationFilter.doFilter(AuthenticationFilter.java:542)
	at org.apache.falcon.security.FalconAuthenticationFilter.doFilter(FalconAuthenticationFilter.java:197)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.falcon.security.FalconAuditFilter.doFilter(FalconAuditFilter.java:64)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.apache.falcon.security.HostnameFilter.doFilter(HostnameFilter.java:82)
	at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1212)
	at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:399)
	at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
	at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
	at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:767)
	at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:450)
	at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
	at org.mortbay.jetty.Server.handle(Server.java:326)
	at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
	at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:928)
	at org.mortbay.jetty.HttpParser.parseNext(HttpParser.java:549)
	at org.mortbay.jetty.HttpParser.parseAvailable(HttpParser.java:212)
	at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
	at org.mortbay.jetty.bio.SocketConnector$Connection.run(SocketConnector.java:228)
	at org.mortbay.thread.QueuedThreadPool$PoolThread.run(QueuedThreadPool.java:582)