When trying to edit/update field definitions on page 2 of the generator using 'First Row Display' the generator flags (incorrectly) ''Invalid Column Referenced" when the columns happen to be displaying on Page 1 of the 'First Row Display'.
- looks like a java-script or some sort of in-memory validation before starting the real validation against the contents of the formula/definition for the column on the generator.
TDMWeb-220.127.116.11.zip resolves this issue. The resolution was a fix to the UI. Please clear browser cache before using this fix.
Contact CA Support to get this version or later. If you are installing a new GA version after 25July2018, please contact CA Support to verify that this fix is in the GA Version you are installing.