What does "-F1" suffix mean at the end of an order number?

Hello, I am trying to figure out why there is a “-F1” suffix at the end of an order number (see near bottom of included image). The order number shows correctly but when viewing the order details there is a suffix added. Does this mean it has been edited? An explanation would be greatly appreciated.

Hi Eric, welcome to the Shopify Community.

Does this “-F1” appear on all orders? If so, this might be a static suffix added in your store settings.

To check if there’s a static prefix or suffix to your order numbers, go to SettingsGeneral and scroll down to the bottom of the page. If you see anything in the suffix field, remove that and you’ll get cleaner (number only) order numbers.

Fulfillment 1

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We have the same situation with only one order number and are unsure also what that means. Were you able to determine what caused that? TIA

F1 means fulfilment 1?

I have done the checking setting and i do not have anything in Prefix and Suffix but occasionally I will see -F1 or -F2 after my oder numbers. Does it means someone might alter the orders ?