skipFinalBackup

Set SkipFinalBackup to false if you want to take a final backup of the file system you are deleting. By default, Amazon FSx will not take a final backup on your behalf when the DeleteFileSystem operation is invoked. (Default = true)

The fsx:CreateBackup permission is required if you set SkipFinalBackup to false in order to delete the file system and take a final backup.