Hello All,
An end user filled out a form, but we’re encountering an XML document handling error in Appian when the process attempts to save the data. Could you please help me troubleshoot this issue? It seems related to entity data conversion, potentially due to malformed XML, special characters, or null values. Any guidance on resolving this would be greatly appreciated.
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Do you see any additional details in the tomcat stdout log file?
An old thread, but I'm facing a similar issue. This is the error message from tomcat-stdOut.log
[Appian Work Item - 708446 - WorkID 198 - execution01 - process 269299497 - model 3708 : UnattendedJavaActivityRequest] ERROR com.appiancorp.process.engine.UnattendedJavaActivityRequest - An error occurred while executing activity: id=268462135, classname=com.appiancorp.process.runtime.activities.MultiWriteToDataStoreSmartService com.appiancorp.common.xml.JaxbConversionException: XML handling failure trying to convert value EntityData [entity=DataStoreEntityRef[id=2908b8f1-3e8f-446f-b573-4083e8e197b4@87164, uuid=null], data=[TypedValue[it=12446,v={1500,1597,,,,,,,,,84,2025-09-17 06:28:53.91,84,2025-09-17 07:13:16.86,1,1,Approved ,1,84,3,}]]] to Appian type EntityData (id=1134)
Notice the thumbs up emoji towards the end.The issue only occurs when using the "Write to multiple Data Store Entities". When passing the same data to the single "Write to Data Store Entity", the data is successfully saved to the DB.