Not sure i understood the whole scenario. However did you try to reload (not reindex) the collection
> Am 26.02.2020 um 15:02 schrieb Joe Obernberger <joseph.obernber...@gmail.com>: > > Hi All - I have several solr collections all with the same schema. If I add > a field to the schema and index it into the collection on which I added the > field, it works fine. However, if I try to add a document to a different > solr collection that contains the new field (and is using the same schema), I > get an error that the field doesn't exist. > > If I restart the cluster, this problem goes away and I can add a document > with the new field to any solr collection that has the schema. Any > work-arounds that don't involve a restart? > > Thank you! > > -Joe Obernberger >