Field definition and scope:

Field 001 contains the control number assigned by the organization creating, using, or distributing the record.  The MARC code identifying whose system control number is present in field 001 is contained in field 003 (Control Number Identifier).

For interchange purposes, documentation of the structure of the control number and input conventions should be provided to exchange partners by the organization initiating the interchange.  An organization using a record of another organization may move the incoming control number from field 001 (and the control number identifier from field 003) to field 035 (System Control Number), 010 (Library of Congress Control Number), or 016 (National Bibliographic Agency Control Number), as appropriate, and place its own system control number in field 001 and its control number identifier in field 003.

The structure of the Library of Congress control number is described in field 010 (Library of Congress Control Number).  The control number in records distributed by LC is contained in field 001.

Field 001 is NOT repeatable.

Guidelines for applying content designators:

Field 001 has no indicators or subfield codes.

See:  Example

Input conventions:

Field 001 may be system generated.

Related MARC fields or documents:

003  Control Number Identifier

010  Library of Congress Control Number

016  National Bibliographic Agency Control Number

035  System Control Number

See also:

Variable Control Fields