I am sending to both lists in case this needs to be addressed with a program update. Every time I update our barcodes in Koha (T0012345 to T 12345) it no longer recognizes the barcodes when trying to check out. I have tried each of the prefix options and we even added a blank option but that still isn't working, I export the itemnumber and barcode, update the barcode and reimport to the DB to a temp table then update the items table with sql expression. The records are updated and then I run the following script: perl /usr/share/koha/bin/maintenance/sync_items_in_marc_bib.pl --run-update It runs for like 6 hours (almost 16k records) it gives following results: Embedded item synchronization report ------------------------------------ Number of bibs checked: 13214 Number of bibs modified: 13167 Number of item fields removed from bibs: 15698 Number of item fields added to bibs: 15698 Number of bibs with errors: 0 I go back into Koha and try to checkout and I get a yellowish box that say barcodes not found. I need to get this to work because rebarcoding is out of the question with the number of items we have in our library. Thanks in advance! Ed Edward Roche Technology Support/Network Admin Solanco School District edward_roche@solanco.k12.pa.us 717.786.2151 The greatest mistake you can make in life is to continually be afraid you will make one. Elbert Hubbard