SearchStax Help Center

The SearchStax Help Center Frequently Asked Questions page includes FAQs about SearchStax Managed Search, our hosted Apache Solr Cloud service.

Underlying Core Creation Failed

SearchStax Cloud clients frequently report mysterious “core creation failed” errors when attempting to create a new collection. They ask what causes these errors and how to avoid them.

"Operation create caused exception:":"org.apache.solr.common.SolrException:org.apache.solr.common.SolrException: Underlying core creation failed while creating collection: test"

This kind of error means one simple thing: the configset for the new collection is missing or is broken. This can come about in a variety of ways:

  • The configset doesn’t exist. Be sure you have uploaded it.
  • There is a typo in the configset name.
  • The configset is missing a file.
  • The configset is missing the Lang subdirectory.
  • It’s the wrong configset for your project. A CMS vendor will sometimes supply a customized configset.
  • There’s an error in a configuration file. For instance, a misplaced closing delimiter in an XML file (/>) can provoke this error message.


Do not hesitate to contact the SearchStax Support Desk.

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