I try to migrate from ISS to koha. I followed your migration guide http://www.au-kbc.org/nrcf/index.htm for migration. First as test phase i used XML file (given in that doc)for importing data (xml file : docs.xml) using your python script i converted it docs.txt and finally using your oer script i creatd docs.out Now im trying to import this data in koha using the following command /usr/local/koha/intranet/scripts/misc/migration_tools/bulkmarcimport.pl -v -file docs.out but it is giving the following error Error in NEWnewbiblio : biblio.biblionumber and biblioitems.biblioitemnumber MUST have the same field number at /usr/lib/perl5/site_perl/5.8.3/C4/Biblio.pm line 1259. Content-Type: text/html Died at /usr/lib/perl5/site_perl/5.8.3/C4/Biblio.pm line 1263. Error in NEWnewbiblio : biblio.biblionumber and biblioitems.biblioitemnumber MUST have the same field number help me to solve this problem, thanks in advance Note : im attaching the error.zip file, it contains the follwoing file 1. docs.xml 2. docs.txt 3. docs.out 4. marc_converter.pl (perl script u given in doc) 5. xml_to_txt.py (python script u given in doc) 6. screen.gif (error screen shot) Your earlier reply will be very much helpful for us. Regds Venkatesh.K