Hi Vimal, I suspect this one is related to your problem: Bug 4955 <http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4955> - adding to basket with no item throws error http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4955 <http://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=4955> Workaround: If you fill out the item type field it should save without an error and an item is created at the record you are ordering. To avoid creation of items in acquisitions you can set the sys pref AcqCreateItem to ‘cataloging’. Katrin From: koha-bounces@lists.katipo.co.nz [mailto:koha-bounces@lists.katipo.co.nz] On Behalf Of Vimal Kumar Sent: Monday, December 06, 2010 7:32 AM To: Koha-List Subject: [Koha] Acquisition module Error 500 Dear Friends, I working with Koha 3.02 Acquisition module. I created a vendor and basket. I got the error message " An error has occured. Error 500" when i added a new order for books. I have not filled the item information (barcode and related information) in the order space. But mew order placed. When i entered item information for another new order, two order for same book created. Whats the wrong with acquisition module? -- Vimal Kumar V. Mahatma Gandhi University Library Kottayam, Kerala- 686 560 Web: http://www.vimalkumar.co.nr Blog: http://vimalkumar.oksociety.in --------------------------------------------------------------------------- "I forget what I was taught. I only remember what I have learnt" -Patrick White