When ordering a title via z39.50, the duplicate match is only done on the first ISBN. This can lead to duplicates being ordered and created. To recreate: 1. Have a record that you can find via z39.50 2. Copy the ISBN 3. In Acquisitions, create a basket 4. Add to basket from an external source 5. Using the copied ISBN, search a z39.50 source 6. Click the result and click Order --> It should warn for a duplicate 7. Click Cancel 8. Edit the record, add a second ISBN 9. Redo steps 4-6 --> It should warn for a duplicate 10. Click Cancel 11. Edit the record, place the second ISBN in first position 12. Redo steps 4-6 --> No duplicate warning! Note: if you cancel after step 12, the duplicate record will have been created. You will need to search your catalog and delete the record to redo the tests. I don't know if that is only in the case of z39.50 or if other types of orders also have that same problem.
I don't know if this is the same problem as bug 27278
Hi Caroline, I am wondering about this one, because I thought we had taken care of it with: Bug 31471 - Duplicate check in cataloguing fails with Elasticsearch for records with multiple ISBN Could you verify the version and search engine you are seeing this with?
Bug 15248 would allow one to define a local matching rule for use in dupe checks, which would sidestep this issue.