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02. “Exceptional” fields and subfields - bibliographic records

When you enter a new record into a CBS MARC 21 database that was made by using a create record template, when you edit or update an existing record in a CBS MARC 21 database, when you remote copy or remote derive a record from WorldCat, or when you make a copy in a CBS MARC 21 database yourself, several “automatic actions” are done on several fields and subfields. The number of fields it applies, is relatively small.

Below, we give an overview of those “exceptional” (sub)fields.

(CBS) MARC 21 field PICA+ field Description M21 subfield PICA+
subfield
Description R / NR
(M)000 002L Leader       NR
      $b $b Record status NR
(M)003 004C Control Number Identifier       NR
      n/a    $a Control number identifier NR
(M)019 015J OCLC Control Number Cross-Reference        NR
      Ind. 1 $S(1) First indicator  
      Ind. 2 $S(2) Second indicator  
      $a $a OCLC control number of merged and deleted record R
(M)029 015T   Other System Control Number       R
      Ind. 1 $S(1) First indicator  
      Ind. 2 $S(2) Second indicator  
      $a $a OCLC library identifier  NR
      $b $b System control number NR
      $c $c OAI set name NR
      $t $t Content type identifier NR
(M)035  015Z System Control Number       R
      Ind. 1 $S(1) First indicator  
      Ind. 2 $S(2) Second indicator  
      $a $a System control number NR
      $z $z Canceled/invalid control number R
      $6 $T/$U Linkage  NR
      $8 $X Field link and sequence number R
(M)040 016E Cataloguing Source       NR
      Ind. 1 $S(1) First indicator  
      Ind. 2 $S(2) Second indicator  
      $a $a Original cataloging agency NR
      $b $b Language of cataloging NR
      $c $c Transcribing agency NR
      $d $d Modifying agency R
      $e $e Description conventions R
      $6 $T/$U Linkage NR
      $8 $X Field link and sequence number R
(M)042 016G Authentication Code       NR
      $a $a Authentication code R
0614 003O Record control number of the linked record in remote database, e.g. OCN in WorldCat         
      $a $a Remote source id (e.g. OCoLC) NR
      $0 $0 Record control number NR
0615 003P Control number of the linked record in remote database that is superseded by another number, e.g. superseded OCN in WorldCat        
      $a $a Remote source id (e.g. OCoLC) NR
      $0 $0 Record control number NR