We are trying to construct a domain based on a Redshift (postgres) data source. The table has columns that have periods in the column names, when saving the domain we get the following error The Domain schema is invalid. Review the schema.The Domain schema has an invalid set or item definitions.The Domain set or item public_logtable_100._customer.__createdat references an invalid resource [public_logtable_100._customer.__createdat]. the error above relates to a column names "_customer.__createdat" - which is a valid column name in redshift Is there anyway around this - renaming the columns is not going to be possible