There is a few ways to add fields, adding the field definition in the managed-schema will do this for you but make sure you have downloaded the current config before you edit and reload the schema.
Google - solr 6.6 upconfig downconfig for lots of guides on this On Tue, 3 Dec 2019, 13:21 Erick Erickson, <erickerick...@gmail.com> wrote: > Update your schema to include the new field and reload your collection. > > Then updating your field should work. > > Best, > Erick > > > On Dec 3, 2019, at 4:40 AM, Vignan Malyala <dsmsvig...@gmail.com> wrote: > > > > How to add a new field to already an existing index in Solr 6.6 ? > > > > I tried to use set for this, but it shows error as undefined field. But > > however I could create a new index with set. > > But, how to add new filed to already indexed data? > > Is it possible? > > > > Thank you! > > > > Regards, > > Sai > >