Solution or Workaround
What does the error 'Numeric Field Overflow' mean?
This error message can occur for a couple reasons:
1: The table or spreadsheet being imported has exceeded the maximum number of characters allowed in an Atlas .dbf table.
2: The table or spreadsheet being imported has one or more column improperly defined as number when they should be string.
Change the column definitions in Excel before importing the table or spreadsheet.
If this does not work, try saving the file as a .dbf or .tx tab delimited instead of an .xls.