System Exception using Merge Data Table

Hello Forum
Today im having trouble with something that im not sure what it is.
What im trying to do is merge to DataTables,
one which i created with “Build Data Table” named dt_ALL2
and the second which i extracted using a “Read Range” named dt_All

Im going to show you both DT and the Exception.




This is just a DEMO workflow im using to test and try some sequences, so dont be angry if the logic if not the best.
Hope someone can help me to know whatt the real problem is.

Thank you.


As column data type of datatable from ReadRange is object, as the following, we need to set objcet in all columns at BuildDataTable activity.



Need to copy data to new datatable which has same schema with dt_All2 from dt_All.


Thank you very much.


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