Telephone Fields and Is Empty Comparison

The is empty comparison will not work for telephone fields because these fields automatically contain parentheses and a hyphen, and therefore, are not really empty.

If you want to find empty telephone fields, use the following expression:

[telephone field] = equals/starts with (   )   -

where the value is opening parenthesis, three spaces, closing parenthesis, three spaces, and a hyphen.

For example: