[Koha-bugs] [Bug 31231] New: Link authorities automatically does not always work

[bugzilla-daemon at bugs.koha-community.org]

https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=31231

            Bug ID: 31231
           Summary: Link authorities automatically does not always work
 Change sponsored?: ---
           Product: Koha
           Version: 21.11
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5 - low
         Component: Cataloging
          Assignee: koha-bugs at lists.koha-community.org
          Reporter: hc at interleaf.ie
        QA Contact: testopia at bugs.koha-community.org
                CC: m.de.rooy at rijksmuseum.nl

Bug 11299 introduced the "Link authorities automatically" function. When the
button is used for fields with only the main heading or the main heading and
one subheading, it works. However, I've noticed a few instances of it not
picking up already existing authority records. When this happens, it generates
a new authority record. Then, if the same authority is used in a new
bibliographic record the "Link authorities automatically" button will link to
the newly created, duplicate authority. 

Example:

In a new bibliographic record, the 650 fields are filled out as follows:

650$a - Biology

650$x - Research

650$y - 1960

There is already an authority record with this content in the 150 field:

150$a - Biology

150$x - Research

150$y - 1960

When the "Link authorities automatically" is clicked, the original authority is
not picked up, but a duplicate authority is created. 

On a new bibliographic record, the same information is added to the 650 fields
and the "Link authorities automatically" is clicked and the duplicate authority
is linked, not the original one.

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