1892127 - No Such Task Exception

The following errors can be found in the default trace files of the server:

[EXCEPTION]
com.sap.bpm.exception.api.BPMIllegalArgumentException: Task with TaskInstanceId: bpm://server.sap.com/task-i nstance/40fd313def8671e2bf4e000017161bb3 doesn't exist
at com.sap.bpem.tm.impl.TaskInstanceManagerBean.complete(TaskInstanceManagerBean.java:123)
at... com.globus.de.glx.wdcomp.kventscheidungcomponent2.KVEntscheidungComponent2

    error 2013-07-15 13:30:11:115 Error while stopping task
[EXCEPTION]
com.sap.bpem.tm.exception.NoSuchTaskException: Task [40fd313def8671e2bf4e000017161bb3] does not exist
at com.sap.bpem.tm.adapter.refstore.ReferenceStoreBean.getReference(ReferenceStoreBean.java:39)
at sun.reflect.GeneratedMethodAccessor667.invoke(Unknown S...com.sap.tc.bpem.wdui.taskinstance.taskexecution.TaskExecution

But the workflow is not affected and there is no influence in the BPM functionality.

SAP NetWeaver BPM 7.30 and higher.

BPM, NoSuchTaskException, Task does not exist, Error while stopping task , KBA , BC-BMT-BPM-DSK , Process Desk , Problem