Data Prep - Update error message displayed when directives cannot be applied in columns with a header name containing a period

When a column's name contains a period (".") some of the directives cannot be applied. The error message displayed is not clear and doesn't offer a resolution for the user.

Open

The error message should say:
This directive cannot be applied because the column header contains a period "."
To format all the headers, go to the "Columns" Tab, click the "Columns Actions" menu and select "Cleanse columns names".