Cannot save class instance without a primary key
I have a file listener in my application that would look after csv files.The csv file needs to be parsed and the data for each record has to be saved in an external table in Pega. I have created a class in Pega with no keys as there is no unique attribute for each record I get in the file. When I am trying to save the data in the table, I am getting below error.
Cannot open or save instances of class XXXX--the class might be abstract, or it might have no defined keys, or it might descend from Code-.
Is it required to have a key defined for the class ?
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