Hi,
By default, the retention duration is set to 14 days (as per basic soft delete) for the vault, you need to undelete the soft deleted resource in order to restore. The undelete operation will bring the resource back into the Stop protection with retain data state where you can restore to any point in time.
Read this process over here - [https://learn.microsoft.com/en-us/azure/backup/backup-azure-security-feature-cloud
Hope this helps.
JS
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