http://wfaudata.roe.ac.uk/twomass-dsa/DirectCone?DSACAT=TWOMASS&DSATAB=twomass_psc&RA=218.8&DEC=-29.9&SR=0.1&VERB=3


Line 39: W06: Invalid UCD '??': UCD has invalid character '?' in '??'
  <FIELD arraysize="*" datatype="char" name="designation" ucd="??">

Line 114: W50: Invalid unit string 'yyyy-mm-dd'
  <FIELD arraysize="*" datatype="char" name="date" ucd="time.epoch" unit="yyyy-mm-dd">

Line 129: W50: Invalid unit string 'Julian days'
  <FIELD datatype="double" name="jdate" ucd="time.epoch" unit="Julian days">

Line 39: W06: Invalid UCD '??': UCD has invalid character '?' in '??'
  <FIELD arraysize="*" datatype="char" name="designation" ucd="??">

Line 114: W50: Invalid unit string 'yyyy-mm-dd'
  <FIELD arraysize="*" datatype="char" name="date" ucd="time.epoch" unit="yyyy-mm-dd">

Line 129: W50: Invalid unit string 'Julian days'
  <FIELD datatype="double" name="jdate" ucd="time.epoch" unit="Julian days">

   

xmllint results:

vo.xml:39: element FIELD: Schemas validity error : Element '{http://www.ivoa.net/xml/VOTable/v1.1}FIELD', attribute 'ucd': [facet 'pattern'] The value '??' is not accepted by the pattern '[A-Za-z0-9_.;\-]*'.
vo.xml:39: element FIELD: Schemas validity error : Element '{http://www.ivoa.net/xml/VOTable/v1.1}FIELD', attribute 'ucd': '??' is not a valid value of the atomic type '{http://www.ivoa.net/xml/VOTable/v1.1}ucdType'.
vo.xml fails to validate