Stefan Hornburg (Racke)
You can use the collections API only when you run Solr in Solr Cloud mode.
Otherwise you get the following error message:
Solr instance is not running in SolrCloud mode
The field types coming with Solr are documented here: https://lucene.apache.org/solr/guide/8_3/field-types-included-with-solr.html#field-types-included-with-solr
However the field types needed for the API are a single word, e.g.
You can find the API field name for each field in your Solr installation at