Exception of type 'DotStat.Db.Exception.KeyValueReadException' in Excel+EDD upload response
When in EDD mapping attribute is provided on a wrong level, the error "Exception of type 'DotStat.Db.Exception.KeyValueReadException' was thrown." is returned in the e-mail.
In this example the METADATA_EN attribute is causing this error as it is not a dataset level attribute, but is attached to several dimensions.