Hi,
If you are using RollUpLists, the reason of this message is certainly due to the fact that you are applying a condition to a column that does not exist in one of the lists that is rolled up. Is this situation expected on your side? I mean to have some lists that do not have the specific column you are filtering on?
You should only apply condition to columns that are available in all lists even though you can select such a column wich will not contain any data for such lists that do not contain the specific column.
An alternative for filtering on such a column is to filter either using a "SqlQuery" statement or at the report level. Of course, on a performance standpoint, it is much better to filter at the "RollUpLists" statement level because the filter will take place at SharePoint level.
Does this make sense? Let me know if you need further information.
Regards,