E0800: Action it is not running its in [PREP] state

ISSUE : E0800: Action it is not running its in [PREP] state
If we will get the following error while running Subworkflow in main Workflow:
EXCEPTION Message:
140317114034876-oozie-biad-W] ACTION[0000002-140317114034876-oozie-biad-W@MDA_TGT_All] XException,
org.apache.oozie.command.CommandException: E0800: Action it is not running its in [PREP] state, action [0000002-140317114034876-oozie-biad-W@MDA_TGT_All]
    at org.apache.oozie.command.wf.CompletedActionXCommand.eagerVerifyPrecondition(CompletedActionXCommand.java:85)
    at org.apache.oozie.command.XCommand.call(XCommand.java:248)
    at org.apache.oozie.service.CallableQueueService$CallableWrapper.run(CallableQueueService.java:175)
    at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:897)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:919)
    at java.lang.Thread.run(Thread.java:738)

Observations:
if we run the subworkflow individually it works fine.
when you added that subworkflow in main workflow then only this issue raises.

Solution:
We set the properties to the subworkflow , again we need to set the same properties to the main workflow.
because while running in oozie, all the properties are assigning from the mainworkflow to the subworkflow.