Can someone please confirm whether or not content indexing is supported against synthetic full backups? We have a single Commvault resource that seems to be implying that CI is NOT supported against synthetic full backups, only traditional fulls and incrementals, and this doesn’t seem to be documented anywhere. Thank you.
Content Indexing against Synthetic Fulls?

Best answer by Blaine Williams
Hi BillK,
https://documentation.commvault.com/commvault/v11/article?p=13133.htm
Content Indexing for Agents That Use Indexing Version 1
Applies to: Agents that use Indexing Version 1
Before you can search your content indexed data, you must enable content indexing at the storage policy level and the client level.
Note: We recommend that you enable content indexing on a storage policy that is configured to perform synthetic full or DASH full backups. If you enable content indexing on a storage policy that is configured to perform traditional full backups, duplicate objects might appear in the content index and search results.
Content indexing support is here but does not mention backup type. https://documentation.commvault.com/commvault/v11/article?p=13101.htm
Can you share more on the error you are receiving?
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