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999 Date of editing the record (O;R)

Field Definition and Scope

This field indicates the date and time the record has been changed and the editor who has performed this changes. This field is created by the database system and should not be inserted manually.

Application of Content Designators


Indicator 1: not defined (blank)

Indicator 2: not defined (blank)


$a Date of last change (M;NR)

$b Time of last change (M;NR)

$c Identification (M;NR)
Numeric id of the editor who updated the record.

Input Conventions

This field is created automatically once a record is updated and must not be entered or changed manually.


  1. 999 $a20040204$b12:00:00$cauge

Internal Representation

{"meta": {"history": [
        "editor": "Editor (998$c)",
        "timestamp": "Timestamp (998$a, 998$b)"
        "editor": "Editor (999$c)",
        "timestamp": "Timestamp (999$a, 999$b)"

Change History

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 resources/cerl_thesaurus/editing/format/999.txt · Last modified: 2020/01/22 19:00 by jahnke



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