# Troubleshooting

This section describes how to troubleshoot problems that might occur when you index data into Vertica.

Documents are not indexed into Vertica

Documents cannot be indexed when the Vertica database server is unavailable, or cannot be reached by CFS. To see whether an indexing error has occurred, check the CFS indexer log. The default location for this log file is `logs/indexer.log`. If documents were not indexed successfully, you will need to ingest these documents again.

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