Hi all, If you use MARC21 and your /etc/koha/zebradb/marc_defs/marc21/biblios/record.abs still contains the following lines, you will not find records with corporative author in 710 via authority search. Why not? The line with 710$9 should be before the default line melm 710. Please note too that the default record.abs contains two lines melm 710. melm 710 Author,Corporate-name #melm 710$t author,Author-title,Name-and-title,Title,Title-uniform melm 710$t Author-title,Name-and-title,Title,Title-uniform #melm 710$a author,author:p,Name-and-title melm 710$a Name-and-title melm 710$9 Koha-Auth-Number #melm 710 author,Name melm 710 Author,Name I commented the last melm 710 Author,Name line and moved the first melm 710 line downwards. This resolves the search problem after reindexing. Like this: #melm 710$t author,Author-title,Name-and-title,Title,Title-uniform melm 710$t Author-title,Name-and-title,Title,Title-uniform #melm 710$a author,author:p,Name-and-title melm 710$a Name-and-title melm 710$9 Koha-Auth-Number #melm 710 author,Name #melm 710 Author,Name #MR commented melm 710 Author,Corporate-name Regards, Marcel de Rooy