> ## Documentation Index
> Fetch the complete documentation index at: https://www.plain.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# updateHelpCenterIndex

> Replace the navigation index (sidebar order and hierarchy) of a help center in a single call.
You must supply the hash returned by the helpCenterIndex query — if the index has changed since
you read it, the call will fail so you can re-fetch and re-apply your changes.
Requires the helpCenter:edit permission.