The documentation items are not in line with the current SFOS and need to be modified.

https://docs.sophos.com/central/customer/help/en-us/ManageYourProducts/FirewallManagement/Firewalls/CentralManageXG/index.html

There appear to be differences overall, but the specific items pointed out are The name of the item "Sophos Central" in the current SFOS19.0 is "Central Synchronization" in the manual. Central Synchronization" in the manual.