008/08 Classification validity (Variable Control Field - Fixed-Length Data Element)

Character position definition and scope:

A one-character alphabetic code that indicates the validity of the classification number or span contained in field 153 . This character position does not contain information about whether the classification number is a standard or optional one. That information is in 008/09 (Standard or optional designation) . A record containing code c (Index term only) in 008/06 (Kind of record) contains code n in this character position.

Guidelines for applying content designators:

Codes: Description:

a Valid

b First number of span invalid

c Last number of span invalid

d Completely invalid

e Obsolete

n Not applicable

Scheme-specific conventions:

Library of Congress Classification

Dewey Decimal Classification

Related USMARC fields or documents:

008/09 Standard or optional designation

X53 Classification Numbers - General Information

253 Complex See Reference

453 Invalid Numer Tracing

685 History Note

For information on other 008 character positions, see:

008 Fixed-Length Data Elements

See also:

Variable Control Fields