The request "Interface Trip Stop - SRS " completed with warning.

   I make ship confirm , the delivery line status become shipped, and next step is Run Interface.

then I run the request "Interface Trip Stop - SRS " , it complete with warning, the log is as flows:

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Shipping Execution: Version : 12.0.0

Copyright (c) 1979, 1999, Oracle Corporation. All rights reserved.

WSHINTERFACES module: Interface Trip Stop - SRS
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Current system time is 11-OCT-2013 11:09:32

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**Starts**11-OCT-2013 11:09:32
**Ends**11-OCT-2013 11:13:52
Interface trip stop is  completed with warning
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Start of log messages from FND_FILE
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InterfaceTripStop: processing all eligible stops for INV OM DSNO
Time spent in notification framework is (sec) 
Time spent in notification framework is (sec) 
Time spent in notification framework is (sec) 
Order Number :12201300146  Line Number :
Message :An error occurred because the workflow is not in the expected status.

Action:        Contact your Oracle support representative.
Order Number :12201300146