Hi Allen, and welcome to Koha! (Note: corrections and clarifications to my remarks are welcome) If I understand your question correctly, as far as I know Koha doesn't really care what kind of barcode structure you use as long as what you use is unique to each user. When I migrated our system from Horizon to Koha in 2013, our books were already barcoded with a 14-digit number. Our patron database was so outdated (we're a teaching hospital, and residents come and go) that I got a spreadsheet of all current employees and uploaded that, using their employee number as the patron barcode. (Not too long after that, they changed everybody's employee number, but that's a different story.) If a visiting resident doesn't have an employee ID number, we can use their badge number, phone number, anything that will work. I wouldn't recommend such a haphazard system for a large busy library, but our monthly checkouts are usually in the high two figures, if that, so it works for us. As Abhishek Nãgar said yesterday, if your books have accession numbers (my college stamped each book with one--this was pre-computer days), you could use that. Or you can order barcode labels from most library supply companies. Chances are, if it works for you, it will work for Koha. Fred King Medical Librarian, MedStar Washington Hospital Center fred.king@medstar.net 202-877-6670 ORCID 0000-0001-5266-0279 MedStar Authors Catalog: http://medstarauthors.org I will work harder! --Boxer the Horse -----Original Message----- From: Koha [mailto:koha-bounces@lists.katipo.co.nz] On Behalf Of abrazier@buttepubliclibrary.info Sent: Wednesday, March 27, 2019 2:16 PM To: Koha; Koha Devel Subject: [Koha] Setting up Koha for the 1st Time ** ATTENTION: This email originated from outside the MedStar network. ** DO NOT CLICK links or attachments unless you recognize the sender and know the content is safe. Hello All, Can anyone tell me how you establish the barcode structure you would like to implement when you are setting up Koha for the first time? Allen in Butte _______________________________________________ Koha mailing list https://urldefense.proofpoint.com/v2/url?u=http-3A__koha-2Dcommunity.org&d=DwIGaQ&c=RvBXVp2Kc-itN3g6r3sN0QK_zL4whPpndVxj8-bJ04M&r=vKh6XwOmjyC51IkP1OfsdjQZoWT2vpi6VZl8El8EPRI&m=gt-NovCSuD69_p_uutQGNmS6WwhEoArpC5o6Lk65Y2E&s=G-faePsaWgxUpXUHaBAI-uZyZ4UbUqwEZ-uLYfuebrU&e= Koha@lists.katipo.co.nz https://urldefense.proofpoint.com/v2/url?u=https-3A__lists.katipo.co.nz_mailman_listinfo_koha&d=DwIGaQ&c=RvBXVp2Kc-itN3g6r3sN0QK_zL4whPpndVxj8-bJ04M&r=vKh6XwOmjyC51IkP1OfsdjQZoWT2vpi6VZl8El8EPRI&m=gt-NovCSuD69_p_uutQGNmS6WwhEoArpC5o6Lk65Y2E&s=3CKuFuzWveJVpcHFDoBCnPrHWFpDogFihE-OIn7iF08&e=