You are trying to xog in a date and receive error -
CMN-0016: Attribute 'Test_attribute' has an invalid value
Release : 15.9.1
Component :PPMXOG
The value was created by converting a script into a Date. Below is being passed as the value of the date which is invalid
<ColumnValue name="Test_attribute">2013-03-31 00:00:00.0</ColumnValue>
Update the conversion to a valid Date