If you are running into 500 errors, and you've exhausted all means to verify you have a valid biblio, a valid item record and confirmed homebranch is populated, there may be one more spot you need check. Before I state what I found, this is a disclaimer. Do not attempt what I did without consulting with your Database Administrator or someone with technical experience. ===Discovery=== You may have an invalid XML structure in your table biblio_metadata->metadata field. Dump the xml content for the suspected record to your clipboard and visit any online xml validator checker tool. Paste it and see if it passes. I found 134 records with invalid xml properties. <datafield tag="500" ind1=" " ind2=" "> <subfield code=""">Based on the TV series SpongeBob SquarePants created by Stephen Hillenburg as seen on Nickelodeon"--T.p. verso.</subfield> </datafield> I found 134 records with triple double quotes as you see above to the left of the word Based. Your koha-rebuild-zebra command should alert you of all xml errors. You'll really want to fix those if you don't want to see 500 errors. Here's my code snippet I ran to fix this problem globally, now keep in mind, your xml errors may not be the same as mine, but you'll have to investigate your own solution: ====sql fix==== -- Step 1: Create a copy of biblio_metadata as reh_biblio_metadata CREATE TABLE reh_biblio_metadata AS SELECT * FROM biblio_metadata; -- Step 2: Update the metadata field in biblio_metadata UPDATE biblio_metadata SET metadata = REPLACE(metadata, '=""">', '="">') WHERE metadata LIKE '%=""%">%'; =========== then exit to system prompt and run your reindex: "koha-rebuild-zebra -f -a -b -v <your-koha-instance>" Cheers! -- photo Rudy E. Hinojosa CEO/President,Lightwave Library +1 737-372-7779 <tel:+1 737-372-7779> | lightwavelibrary.com <https://lightwavelibrary.com> rudy.hinojosa@lightwavelibrary.com <mailto:rudy.hinojosa@lightwavelibrary.com> 25101 Ronald W. Reagan Blvd #49, Georgetown TX 78633 <https://maps.google.com/?q=25101 Ronald W. Reagan Blvd #49, Georgetown TX 78633>