User was able to create a case but was receiving a BW validation error on an optional field. This happened when a case was started for the procedure that contained an EAIBW step. The field value returned from TIBCO ActiveMatrix BusinessWorks was 0 instead of Null and was throwing a "not nillable" error.

Error Snippet: The following error was logged by TIBCO ActiveMatrix BusinessWorks process

Output data invalid
    at com.tibco.pe.core.ProcessGroup.a(Unknown Source)
    at com.tibco.pe.core.ProcessGroup.eval(Unknown Source)
    at com.tibco.pe.plugin.Activity.eval(Unknown Source)
    at com.tibco.pe.core.TaskImpl.eval(Unknown Source)
    at com.tibco.pe.core.Job.a(Unknown Source)
    at com.tibco.pe.core.Job.k(Unknown Source)
    at com.tibco.pe.core.JobDispatcher$JobCourier.a(Unknown Source)
    at com.tibco.pe.core.JobDispatcher$JobCourier.run(Unknown Source)
caused by: org.xml.sax.SAXException: validation error: #cvc-elt.3.1 Element "{http://kpn.nl/iCAP/schemas/OrderCase/1.0}EVENT_REMARK" is not nillable.   ({com.tibco.xml.validation}COMPLEX_E_ELEMENT_NOT_NILLABLE) at /ns1:INPUT[1]/ns1:EVENT[1]/ns2:EVENT_REMARK[1]
com.tibco.xml.validation.exception.InvalidNilAttributeException: #cvc-elt.3.1 Element "{http://kpn.nl/iCAP/schemas/OrderCase/1.0}EVENT_REMARK" is not nillable.
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