0xx Fields

Contents   Fixed field   Access points   0xx   1xx   2xx   3xx   4xx   5xx   6xx   7xx   8xx   9xx   Control subfields

029  Other System Control Number (R)

Record Type


Input Standards

Field (Full/Minimal)
System supplied/System supplied
1st Indicator  The type of system control number
0 Primary control number
1 Secondary control number
2nd Indicator  Undefined
blank character Undefined
Subfields (R=Repeatable  NR=Nonrepeatable) Input Standards (Full/Minimal)
ǂa OCLC library identifier (NR) System supplied/System supplied
ǂb System control number (NR) System supplied/System supplied
ǂc OAI set name (NR) System supplied/System supplied
ǂt Content type identifier (NR) System supplied/System supplied


OCLC uses field 029 for system control numbers for records from non-OCLC automated systems (e.g., Library and Archives Canada, the British Library, WorldCat Cataloging Partners vendors, etc.). OCLC uses these numbers to process and track records from other systems.


029 1   OCL ǂc /p15000coll1 ǂt CNTNT
029 1   CNTNT ǂb /p103401ccp2_mzb
029 1   AU@ ǂb 000025198108

1st Indicator

The type of system control number. Whether the other system control number is primary or secondary.


Primary control number


Secondary control number

2nd Indicator

Undefined. The 2nd indicator position is undefined and contains a blank.

blank character



ǂa OCLC library identifier

The library from which the non-OCLC system number is generated.

ǂb System control number

The entire number.

ǂc OAI set name

Contains the collection alias for CONTENTdm-based items. Contains the OAI set name for other digital items.

ǂt Content type identifier

Identifies the type of CONTENTdm collection or item or other type of digital collection or item. The following codes are used.

CNTCOLL CONTENTdm collections
DGCNT All other digital items
DGCOLL All other digital collections


Field 029 is OCLC-defined and therefore not included in MARC 21 Format for Bibliographic Data.

This page last revised: August 27, 2020