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355 - SECURITY CLASSIFICATION CONTROL (R)
Specifics pertaining to the security classification associated with the document title abstract contents note and/or the author. In addition it can contain handling instructions and external dissemination information pertaining to the dissemination of the document title abstract contents note and author. The field may also contain downgrading or declassification data the name of the classification system and a country of origin code. Code from: MARC Code List for Countries
Indicators
- First - Controlled element
- 0 - Document
- 1 - Title
- 2 - Abstract
- 3 - Contents note
- 4 - Author
- 5 - Record
- 8 - Other element
- Second - Undefined
- # - Undefined
Subfield Codes
- $a - Security classification (NR)
A term that specifies a security classification (e.g. Unclassified Secret Confidential associated with the document title abstract contents note or author. - $b - Handling instructions (R)
Handling instructions e.g. who may handle or see the document title abstract contents not or author's name. - $c - External dissemination information (R)
- $d - Downgrading or declassification event
(NR)
Data about the security classification often a phrase pertaining to downgrading or declassification e.g. OADR (which stands for "Original Agency Determination Required"). Dates relating to the downgrading or declassification event are recorded in subfields $g or $h. - $e - Classification system (NR)
The name of a classification system not necessarily from a controlled list. - $f - Country of origin code (NR)
A two- or three-character alphabetic MARC code indicating the country of origin of the classification. Code from: MARC Code List for Countries - $g - Downgrading date (NR)
A date pertaining to the downgrading of the document title abstract contents note or author information. Downgrading involves changes to security classification from higher level to a lower level of classification. - $h - Declassification date (NR)
A date pertaining to the declassification of the document title abstract contents note or author information. Declassification involves the removal of any security classification on and item. - $j - Authorization (R)
Information that identifies by whose authority a change in security classification was made. The subfield contains a MARC organization code.
See Organization Code Sources for a listing of sources used in MARC 21 records. - $6 - Linkage (NR) See Control Subfields
- $8 - Field link and sequence number (R) See Control Subfields
Examples
355 |
0#$aUnclassified$bFOUO |
355 |
2#$aConfidential$bNOFORN |
355 |
3#$aSecret |
355 |
1#$aSecret$bNOFORN$bNOCONTRACT |
355 |
0#$aSecret$bFRD$cAS$d010101 |
355 |
0#$aConfidential$bNOCONTRACT$cUK$d20281001 |
355 |
0#$aSecret$bNOFORN$bWNINTEL$bNOCONTRACT$dOADR |
355 |
0#$aTop Secret$cUS$cCA$fxxk |
355 |
0#$aSecret$bNOFORN$h20230301 |
355 |
0#$aSecret$bNOFORN$h20230301$j[agency identifier] |

