This selection is not valid.There are several possible reasons: Copy and paste areas cannot overlap unless they are the same ...

This selection is not valid.There are several possible reasons:• Copy and paste areas cannot overlap unless they are the same size and shape.• If you are using the Create from Selection command, the row or column containing the proposed names will not be included in the definitions of the names.• If the names you are creating are listed in a row or column, you must select more than one row or column.•  If you clicked the Data Table command, you must select a single rectangle that is more than one row high and more than one column wide.