====== 035 Obsolete record identifier (O;R) ======


==== Field Definition and Scope ====

This field contains the record identifier of a record that has been merged into the current one for deduplication. 








==== Application of Content Designators ====

=== Indicators ===
both indicators are undefined and thus left blank

=== Subfields ===

** $z Obsolete record identifer (M;NR) **\\
CERL Thesaurus record identifier of a deleted record, which content was merged into the current record.
\\
\\




==== Input Conventions ====
This field is created automatically when two records are merged (either in an offline updating process or by using the WinADH database client). A field 035 must by no means be deleted from a record, in order to ensure that all record identifiers ever assigned to a CERL Thesaurus record are kept valid.

This field is used for CERL Thesaurus identifiers only. Identifiers from other systems should be given in the respective field [[801]].





==== Mapping ====
In RDF Export, the following mapping is applied
|$z|owl:sameAs|for all occurrences|

  * owl represents the namespace "http://www.w3.org/2002/07/owl#"
  * uses the OWL build-in vocabularay (see [[http://www.w3.org/TR/owl-ref/]])

**Mapping Example**
<code>
<rdf:Description rdf:about="http://cttest.cerl.org/cnl00008971">
   <owl:sameAs rdf:resource="http://cttest.cerl.org/cnl00002777"/>
   <owl:sameAs rdf:resource="http://cttest.cerl.org/cnl00004777"/>
   <owl:sameAs rdf:resource="http://cttest.cerl.org/cnl00006227"/>
   <owl:sameAs rdf:resource="http://cttest.cerl.org/cnl00006481"/>
</rdf:Description>
</code>

==== Examples ====

  - 035 ##$zcnl00000718

==== Internal Representation ====
<code javascript>
{"data": {"previousId": ["Obsolete record identifier ($z)"]}}
</code>

==== Change History ====
  * //18.07.2017//: Subfield $6 will no longer be supported, once the CT has been migrated into its new environment.
  * //19.04.2024//: Subfield $z marked as not repeatable (this has actually been an error in the format description, this subfield was never meant to be repeatable and has never been repeated in the CERL Thesaurus)