Area: "XYZ", field: "XYZ" is mapped with the default value of "XYZ" but this value cannot be found in the code table."
"XYZ" will vary based upon your mapping name, the field that you are working with and the default value that you have selected.
This message indicates that you have selected a default value that does not exist in a code table. Likely that means that the field once was in your table and has been deleted.