Skip to main content
OCLC Support

Why do the number of records in my query collection differ from the number in MarcEdit when I upload the file?

Applies to
  • WorldShare Collection Manager

Collection Manager indexes are rarely 100% correct for these reasons:

  • Merges that haven't been reflected in the index yet could cause higher result counts.  For example, OCN 1 merged into 2.  Both could be in the result, but only record 2 actually exists (2 would appear in the search but only 1 would appear in the file).
  • Sometimes WorldCat records are just deleted without being merged into anything, and these are often still included in query collection results.
  • Sometimes the numbers returned by a query were never valid OCLC numbers at all or at least point at records in Worldcat HBase that either do not have the required dataSource="xwc" column or are just blank in the "document" column where the actual XML record is supposed to be.
  • Sometimes records cannot be crosswalked into the desired format (marc21, marc xml, etc) for issues such as too much data in a field / subfield.  This can be caused by the WorldCat record itself or by the user's customizations in the institution profile.
Page ID