# DMU2 validation report (2016-12-01) - There is no README. Is it the same as for previous versions. What is the encoding for the `z_source` column. - There is no meta information associated. - - There are duplicates. Some `OBJID` are duplicated. I tried to generate a `specz_ID` based on the position with a precision of 0.01 arcsec for the public catalogue (that will be ingested in the VO database) but this leads to duplicate IDs.