Library of Congress >> MARC >> Authority >> 01X-09X >> 035

035 - System Control Number (R)

MARC 21 Authority - Full
October 2003
First Indicator
Undefined
# - Undefined

Second Indicator
Undefined
# - Undefined

Subfield Codes
$a - System control number (NR)
$z - Canceled/invalid system control number (R)
$6 - Linkage (NR)
$8 - Field link and sequence number (R)

FIELD DEFINITION AND SCOPE

Control number for the record in a system other than the one whose control number is contained in field 001 (Control Number), field 010 (Library of Congress Control Number), or field 016 (National Bibliographic Agency Control Number).

For interchange purposes, documentation of the structure and use of the system control number must be provided to exchange partners by the originating organization. Each valid system control number and any related canceled/invalid control number are contained in a separate 035 field.

GUIDELINES FOR APPLYING CONTENT DESIGNATORS

■ INDICATORS

■ SUBFIELD CODES

$a - System control number
MARC code (enclosed in parentheses) of the organization originating the system control number, followed immediately by the number. See Appendix G: Organization Code Sources.
035 ##$a(CaBVaU)2835210335
$z - Canceled/invalid system control number
Canceled/invalid system control number that is associated with the valid system control number contained in subfield $a.
035 ##$a(OCoLC)1553114$z(OCoLC)153114
$6 - Linkage
See description of this subfield in Appendix A: Control Subfields.
$8 - Field link and sequence number
See description of this subfield in Appendix A: Control Subfields.

INPUT CONVENTIONS

Structure - Structure of the system control number is determined by the documentation provided by the originating system. No space occurs between the parenthetical MARC code and the first character position of the control number. For Canadian organizations, the organization code is preceded by the letters "Ca."
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