Hello, I have generated report of empty records and as a result I've got about 2 000 of them. When I had tried to batch delete them I've got a message that it is imposible. It looks like this: Bibliographic record 313 was not deleted. An error occurred. (The error was: DBD::mysql::st execute failed: Duplicate entry '313' for key 'PRIMARY' [for Statement "INSERT INTO deletedbiblioitems SET number = ?,marcxml = ?,publishercode = ?,cn_source = ?,pages = ?,collectionissn = ?,place = ?,collectionvolume = ?,totalissues = ?,volume = ?,cn_class = ?,editionstatement = ?,biblionumber = ?,size = ?,timestamp = ?,lccn = ?,marc = ?,agerestriction = ?,ean = ?,url = ?,publicationyear = ?,volumedesc = ?,cn_item = ?,itemtype = ?,volumedate = ?,editionresponsibility = ?,cn_sort = ?,illus = ?,isbn = ?,cn_suffix = ?,collectiontitle = ?,biblioitemnumber = ?,notes = ?,issn = ?" with ParamValues: 0=undef, 1=" 00396camsa2200157ba 4500 009698 940202 1 Hcee.03 Hce.03 Hce.03 SANDBURG, Carl Dikter i urval 1934 0096...", 2=undef, 3=undef, 4=undef, 5=undef, 6=undef, 7=undef, 8=undef, 9=undef, 10=undef, 11=undef, 12='313', 13=undef, 14='2016-06-07 20:42:21', 15=undef, 16='00396camsa2200157ba 4500001000700000008003900007081002800046100001900074245001900093260000900112596003900121700002100160886003200181900001200213999001300225.009698.940202 1 . .aHcee.03.kHce.03.hHce.03.1 .aSANDBURG, Carl.10.aDikter i urval.0 .c1934. .x009698.bDiktonius, Elmer / övers..10.aDiktonius, Elmer.0 .bLA ASWSW0000SWES BD.2PULSEN.00.a2158328. .c313.d313..', 17=undef, 18=undef, 19=undef, 20=undef, 21=undef, 22=undef, 23=undef, 24=undef, 25=undef, 26='', 27=undef, 28=undef, 29=undef, 30=undef, 31='313', 32=undef, 33=undef] at /home/kohaadmin/kohaclone/C4/Biblio.pm line 3419. , see the Koha log file for more information). Does anyone have an idea what is a problem? Do I have go through it manually? Med vänlig hälsning Lukasz Mesek Vuxenbibliotekarie Alingsås bibliotek lukasz.mesek@alingsas.se