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Current situation or problem:
- In the SRS MARC Bib 020 field, the ISBN may
- be the 10 or 13 digit version (10 digit version is obsolete and can be translated to the 13 digit version; also the 10-digit version may contain a letter X as the final character, whereas the 13 digit version is all-numeric)
- have a qualifier in the same subfield (a or z) as the number
- may not calculate properly into a valid ISBN, even if recorded in $a instead of $z
- In the FOLIO Instance identifier field, the ISBN may
- be the 10 or 13 digit version
- will have any qualifiers in the same field as the number, regardless of whether they are in separate subfields in the underlying MARC
- may not calculate properly into a valid ISBN, even if pulled from the underlying MARC 020 $a
- All of the above makes ISBN matching in MARC-MARC and MARC-Instance matches less-reliable than desired
- This feature seeks to improve the reliability of these matches
In scope:
- When matching MARC-MARC or MARC-Instance
- If the data is coming from MARC 020$a or Instance ISBN field, and is the 10-digit version, then calculate the 13-digit version and use that for matching
- If the 13-digit version cannot be calculated, then use the existing data for matching
- If the data is coming from MARC 020$a or Instance ISBN field, and has qualifier information after the number (in the same MARC subfield, or in the Instance ISBN field), then ignore the qualifier or additional information after the number when matching
- If the data is coming from MARC 020$z or Instance Invalid ISBN field, then use the data as-is for matching purposes
- Question: should qualifier info in the 020$z or in the Instance Invalid ISBN field be ignored?
Out of scope:
Use case(s):
- SMEs: Please add examples*
Proposed solution/stories:
Links to additional info:
Questions:
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