Area 51 XLT hybrid ordered 11/9/21
From the dealer it is called "Order Number", and from Ford it is called "Order Sales Code". There is no "sales code" or "order code".I think the sales code is probably from Fords system as you stated, they all seem to be F and x number of digits, but I am not sure of the sequence and/or meaning.
every time I have contacted Ford customer service, I have given them my sales code, order code and they find it right away. But order code alone is no good and I am guessing the sales code may be Ford and dealer or area related, since they have not been able to find a specific order without a 2nd piece of information like the order code or VIN if issued.
The very 1st time I contacted Ford and gave my name and Order Number, and he found my order right away.