A data consistency error occured while loading available columns

Overview

This error may occur when you have selected a user defined field with a data field of 0 pixels wide.

To begin with, this field will not show up in the drop-down list. This is because it is a label and they can not be imported.

Most likely you have mapped this udef before and it was changed at a later stage. Or you have used it in another profile in another account and have now imported the profile.

Solution

The only solution here is to remove the invalid mapped fields.

In the profile - configure fields page click on the remove the invalid mapped fields button.