After you apply System Center Operations Manager 2007 R2 Cumulative Update 3 (CU3), a workflow that queries the EventData element of an SDK event may fail to properly evaluate the XPATH query. Specifically, this occurs if the SDK event does not include a Dataitem element as the next element after EventData.
This is a known issue in System Center Operations Manager 2007 R2 CU3.
There are two workarounds for this issue:
1. Run expression filters only against top-level event elements, such as EventNumber, EventCategory or PublisherName.
2. If you must run an expression filter against the EventData element of an SDK event, change the connector to make sure that every inserted event includes a Dataitem element immediately after the EventData element. Then change expression filters to query the elements after Dataitem using an XPATH expression such as the following:
In the above XPATH example, VALUE is the name of an XML element that is immediately after the Dataitem element.
The information above was published today in the following Microsoft Knowledge Base article written by Michael Sadoff:
KB2507575 - Valid XPATH queries may fail against the EventData element of SDK events after you apply System Center Operations Manager 2007 R2 CU3
J.C. Hornbeck | System Center Knowledge Engineer
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