Intermittent issue when calling partner services asynchronously.

11:48:56,982 ERROR [BpelEngineImpl] Scheduled job failed; jobDetail=JobDetails( instanceId: null mexId: hqejbhcnphr6bosds7rl5x processId:

{http://wso2.org/bps/samples/LoanProcess}

LoanProcess-1 type: INVOKE_INTERNAL channel: null correlatorId: null correlationKeySet: null retryCount: null inMem: false detailsExt:

{enqueue=false}

)
java.lang.NullPointerException
at org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:222)
at org.apache.ode.bpel.engine.BpelProcess.invokeProcess(BpelProcess.java:297)
at org.apache.ode.bpel.engine.BpelProcess.handleJobDetails(BpelProcess.java:450)
at org.apache.ode.bpel.engine.BpelEngineImpl.onScheduledJob(BpelEngineImpl.java:467)
at org.apache.ode.bpel.engine.BpelServerImpl.onScheduledJob(BpelServerImpl.java:445)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:535)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob$1.call(SimpleScheduler.java:529)
at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:284)
at org.apache.ode.scheduler.simple.SimpleScheduler.execTransaction(SimpleScheduler.java:239)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:529)
at org.apache.ode.scheduler.simple.SimpleScheduler$RunJob.call(SimpleScheduler.java:513)
at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:303)
at java.util.concurrent.FutureTask.run(FutureTask.java:138)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)
at java.lang.Thread.run(Thread.java:619)