Dear Sir, I have imported bib (.mrc) to koha 3. After imported, the system can automatically add item(s) but the field 'Item call number' is blank. In System Preferences Admin: Cataloguing Preferences, I set the parameters as follows: ----------------------------------------------------- - DefaultClassificationSource lcc - ItemCallNumber 050ab ----------------------------------------------------- Why the system does not auto-generate and display the item call number on the screen? I do not know whether I have done wrong with the system preferences? Could you guide me about this issue? I already spent almost a week trying to solve this problem. Please kindly help. Best regards, Neelawat KOHA, Thailand