Dear List, Iam having problems checking out books using SIP2 with telnet.i am using koha 3.0.i am not sure if i have given the patron identifier correctly the message which i gave is as follows root@boss[SIP]#telnet 192.168.38.208 8023 Trying 192.168.38.208... Connected to 192.168.38.208. Escape character is '^]'. login: root password: root Login OK. Initiating SIP 9300CNvimallaxman|COramlaxman|CPCCL 941 11YN20060623 07311920060623 073119AO|AA1888|ABMIC004|AC| 120NUN20090623 075127AOCCL|AA|ABMIC004|AJThe 8051 Micro Controller-Architecture,Programming and Applications |AH|AF2 / 2| The Syslog reports the follwing Error Jun 23 07:51:27 boss acs-server[8384]: ILS::Transaction::Checkout performing checkout... Jun 23 07:51:27 boss acs-server[8384]: ILS::Checkout Issue failed Jun 23 07:51:27 boss acs-server[8384]: add_field: Undefined value being added to 'AA' Jun 23 07:51:27 boss acs-server[8384]: OUTPUT MSG: '120NUN20090623 075127AOCCL|AA|ABMIC004|AJThe 8051 Micro Controller-Architecture,Programming and Applications |AH|AF2 / 2|' here the ' 1888 ' is the card number which i have given to the parton,is it correct or do i have to give something else.thanks in advance for your help. regards, vimal