[Koha-devel] problem with mandatory subfields

Hi, I discovered one problem while I am trying to enter one record from our OPAC. Right now, 100c is mandatory. This is not correct. (See the examples at http://lcweb.loc.gov/marc/bibliographic/ecbdmain.html; I think 100a is mandatory, not 100c.) But assuming that 100c really is mandatory, it would really only mean that one of 100c, 110c or 111c is mandatory, since any of 100, 110, or 111 can be the main entry. Is it currently possible to specify that one of several subfields is mandatory? Or is this something that cannot yet be specified? -- Ambrose Li Chinese Cultural Centre of Greater Toronto | http://www.cccgt.org/