Dear All, Thanks for your reply I am able to resolve some of the issue but still I am not able to change the mapping at Book, Booklets, Workbooks category, whenever I do any changes in the framework of Book at the last option it automatically goes to the default framework when I make any changes. Code Description Tag Tabs in use BKS Books, Booklets, Workbooks 024 0,6 BKS Books, Booklets, Workbooks 040 0,6 BKS Books, Booklets, Workbooks 044 0,6 BKS Books, Booklets, Workbooks 050 0,6 BKS Books, Booklets, Workbooks 270 6,9 BKS Books, Booklets, Workbooks 521 0,6 BKS Books, Booklets, Workbooks 538 5,6 BKS Books, Booklets, Workbooks 583 6,9 BKS Books, Booklets, Workbooks 907 6,9 BKS Books, Booklets, Workbooks 952 1,10 OK all authority types used in the frameworks are Secondly when I execute rebuild-zebra.pl -b -a -v following error is comings. 2201.....:12: parser error : xmlParseEntity Ref: no name <subfield code="D">TODAY & TOMORROWS PRINTERS AND PUBLISHERS </subfield> at /usr/libr/per5/XML/LibXML/SAX/Parser.pm line 31. Thanks and Regards R Sunil Kumar Library Technologist cid:image001.jpg@01CC250B.5782A730 Ecole Solutions Pvt Ltd Level 15 Concorde Towers UB City 1 Vittal Mallya Road Bangalore 560001,India Mobile: +91 9686576695 Fax: +91 80 40300400 eMail: sunil.kumar@ecoleglobal.com Web: www.ecoleglobal.com