Combine Two or more subject areas

Summary:

I tried to add a new subject area to my report - all I need from the below subject area is the Employees Name which is not in the first subject area for Payroll costing. I get the below error, but I am confused as to how I can add all the same data types when the new subject area will not have the same data. The only commonality between the two would be the Person Number.

Error I am getting - "Numbers of columns and their data types must be consistent across all criteria and Result Columns."

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