Error occurred while building the Business Process ,BPM ,Cordys

Error occurred while building the Business Process 'bpm/EveryThingBPM' (java.lang.StringIndexOutOfBoundsException: String index out of range: 0)
at com.cordys.cws.util.StudioLogger.studioException(StudioLogger.java:199)
at com.cordys.bpm.BusinessProcessBuildTask.execute(BusinessProcessBuildTask.java:134)
at com.cordys.cws.tasks.StudioTaskHelper.executeTask(StudioTaskHelper.java:52)
at com.cordys.cws.tasks.StudioTaskHelper.executeTasks(StudioTaskHelper.java:70)
at com.cordys.cws.tasks.StudioTaskHelper.executeTasks(StudioTaskHelper.java:78)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler$2.run(ModelHandler.java:348)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler.executeProfiled(ModelHandler.java:317)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler.executeProfiledModelerCode(ModelHandler.java:362)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler.gatherAndExecuteTasks(ModelHandler.java:343)
at com.cordys.cws.internal.buildengine.build.modelbuilder.ModelBuilder.buildModel(ModelBuilder.java:225)
at com.cordys.cws.internal.buildengine.build.modelbuilder.ModelBuilder.continueFlow(ModelBuilder.java:119)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler.initiateFlow(ModelHandler.java:171)
at com.cordys.cws.internal.buildengine.build.modelbuilder.ModelBuilder.initiateFlow(ModelBuilder.java:81)
at com.cordys.cws.internal.buildengine.modelhandler.ModelHandler.performAction(ModelHandler.java:94)
at com.cordys.cws.internal.buildengine.build.BuildEngine.doBuild(BuildEngine.java:334)
at com.cordys.cws.internal.buildengine.build.BuildEngine.buildQueue(BuildEngine.java:286)
at com.cordys.cws.internal.buildengine.build.BuildEngine.processQueue(BuildEngine.java:241)
at com.cordys.cws.internal.buildengine.build.BuildEngine.build(BuildEngine.java:214)
at com.cordys.cws.internal.buildengine.deploy.DeployEngine.processQueue(DeployEngine.java:101)
at com.cordys.cws.internal.buildengine.deploy.DeployEngine.deploy(DeployEngine.java:177)
at com.cordys.cws.internal.buildhelper.Deployer.doOperation(Deployer.java:27)
at com.cordys.cws.internal.operation.OperationBase.run(OperationBase.java:114)
at com.cordys.cws.internal.operation.runner.OperationRunner.runOperationSynchronous(OperationRunner.java:124)
at com.cordys.cws.internal.operation.runner.OperationRunner.runOperation(OperationRunner.java:52)
at com.cordys.cws.internal.buildhelper.BuildHelper.runOperation(BuildHelper.java:134)
at com.cordys.cws.internal.buildhelper.BuildHelper.deployObject(BuildHelper.java:70)
at sun.reflect.GeneratedMethodAccessor14.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.cordys.cws.internal.soap.javacall.MethodCall.finalInvoke(CWSJavaCallProcessor.java:508)
at com.cordys.cws.internal.soap.javacall.AsyncInvokeOperation.doOperation(CWSJavaCallProcessor.java:958)
at com.cordys.cws.internal.operation.OperationBase.run(OperationBase.java:114)
at com.cordys.cws.internal.operation.pool.OperationExecution.run(OperationExecution.java:32)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Caused by: java.lang.StringIndexOutOfBoundsException: String index out of range: 0
at java.lang.String.charAt(String.java:658)

<span style="font-family: Arial, Helvetica, sans-serif; background-color: rgb(255, 255, 255);">解决方法：</span>

<span style="background-color: rgb(255, 255, 255);">       cordys在赋值时候，另一个mapping字段没填。</span>