JAXB failure trying to convert typed value

Question

We are getting below error
Error: JAXB failure trying to convert typed value TypedValue[it=568,v={b1402e2e-f2c1-48a7-9b83-760933e5a878@7902,{TypedValue[it=2580,v={<null>,3443,IP Data Entered ,IP Entered Data,<null>,,2016-09-01 22:47:41.17,2016-09-01 23:00:37.25,kz568987,2016-09-01 23:00:37.25}],TypedValue[it=2580,v={<null>,3467,IP Data Entered ,IP Entered Data,<null>,,2016-09-01 22:47:41.17,2016-09-01 23:00:37.25,kz568987,2016-09-01 23:00:37.25}],TypedValue[it=2580,v={<null>,3455,IP Data Entered ,IP Entered Data,<null>,,2016-09-01 22:47:41.17,2016-09-01 23:00:37.25,kz568987,2016-09-01 23:00:37.25}]}}] to java class com.appiancorp.common.EntityData

We are using "write to multiple data store” smart service for db updates. Node get stuck for some instances.
Process gets resumed by restarting the node. Can anyone help on this please? Thanks.

Ravichandran Thiruganasambandham (Ravi Sam) · Answer

As far as I remember, If the user submits the form with EXTENDED ASCII CHARACTERS or NON PRINTABLE CHARACTERS , Write to Data Store Entity node will throw this kind of error. 
 Consider using the clean function to remove the non-printable characters from user typed values. 
 FYI, We found that this error is not happening in Write to Data Store Entity but it is happening in Write to Multiple Data Store Entities .