E' un errore a runtime e credo che questo sia il problema peggiore 
Uncaught exception (see the 'inner exception' below) has suspended an instance of service 'SABTaskOperation.ORCHOperation(c7a8f90d-8ab2-4da8-9dcb-426e2caddde1)'.
The service instance will remain suspended until administratively resumed or terminated.
If resumed the instance will continue from its last persisted state and may re-throw the same unexpected exception.
InstanceId: 3ec67b60-bcd4-44b5-b8ee-91d5ae7a550b
Shape name:
ShapeId: 00000000-0000-0000-0000-000000000000
Exception thrown from: segment 1, progress 12
Inner exception:
Exception type: RuntimeInternalErrorException
Source: Microsoft.XLANGs.Engine
Target Site: Microsoft.XLANGs.RuntimeTypes.DistinguishedFieldDefinition GetDFDef(System.String)
The following is a stack trace that identifies the location where the exception occured
at Microsoft.XLANGs.Core.Part.GetDFDef(String dottedPath)
at Microsoft.XLANGs.Core.XSDPart.GetDistinguishedField(String dottedPath)
at SABTaskOperation.ORCHOperation.segment1(StopConditions stopOn)
at Microsoft.XLANGs.Core.SegmentScheduler.RunASegment(Segment s, StopConditions stopCond, Exception& exp)
Tagliamo corto, è causato dall' utilizzo di Distinguished Fields su elementi XML di tipo qualifield, in parole più semplici se avete la propietà dello schema "Element FromDefault" a Qualified.
Questa situazione può facilmente essere causata da un messaggio response, esempio di Oracle, che appunto utilizza elementi qualified nei propri messaggi, ma non solo.