FDM is not masking column name with special character (-) in it. Ex: Non-individual investor name Summary section shows as "Non". Due to this column name validation is failing while masking.
Source database: SQL Server (or) Oracle
This issue we identified during masking in FDM 4.7 or older version.
Patch (FastDataMasker-4.7.413.0.zip) for this issue has shared by product team. Please raise a support ticket to get fix for this issue.