Field definition and scope:

Field 001 contains the system control number assigned to a separate holdings record.  For interchange purposes, documentation of the structure of the control number and input conventions are provided to exchange partners by the organization initiating the interchange.

An organization receiving a separate holdings record may move the control number of the distributing system from field 001 to field 014 (Linkage Number) or to field 035 (System Control Number), and place its own control number in field 001.

Field 001 is NOT repeatable.

Guidelines for applying content designators:

Field 001 has no indicators or subfield codes.

Input conventions:

System-generated elements:  Field 001 may be system generated.

Embedded holdings information:  When holdings information is embedded in a related MARC bibliographic record, field 001 is not input.

Related MARC fields or documents:

014  Linkage Number

035  System Control Number

See also:

Variable Control Fields