Process Model Error

Hi all , 

Can you guys help me to resolve this .

An error occurred while trying to write to the entity “testTableR” [id=29e7a83e-f6e0-4bd6-a17f-5cc8c25ca65f@384909, type=testTableR (id=21820)] (data store: Testing). Details: java.lang.IllegalArgumentException: The list of records to be saved must not be null or empty: TypedValue[it=21821,v=<null>] Data: TypedValue[it=21821,v=<null>]

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