From p. 4 of  Summary of Programmatic Changes to the LC/NACO Authority File: What LC-PCC RDA Catalogers need to know,



1.      Conference headings: any AACR2 authority record with a 111 field, and any authority record with a 110 field containing subfield $b whose text is present in a list of terms that mean "conference" in some fashion, will be labeled with a 667 field indicating that the 11X field must be reviewed before it can be used under RDA.



From: Program for Cooperative Cataloging [mailto:[log in to unmask]] On Behalf Of Horne, Carl Stanley
Sent: Tuesday, December 11, 2012 9:19 AM
To: [log in to unmask]
Subject: [BIBCO] a question about the LCNAF Phase I software


Dear All,


At Indiana we have noticed a couple of authority records that were flagged with the 667 note “THIS 1XX FIELD CANNOT BE USED UNDER RDA UNTIL THIS RECORD HAS BEEN REVIEWED AND/OR UPDATED”  for which we cannot see any obvious reason for the flagging.  One example is the AR for  United Nations.  $b General Assembly  (n79007295).  Can anyone enlighten me, please?