You can create a customer / vendor via internet:
Here is a specific instruction to ask for a customer:
Create me a customer account for XXX Cargo company on USMF legal entity.
Collect legal name, web site, address and phone information from it's website.
Fill Currency and Customer group fields according to the country of the company which you can find on it's web site.
Assign a credit limit according to the risk score definitions on D365F&O and don't convert to customer's currency code D365F&O will convert itself.
Create number sequence according to the customer group
Here, what is important is to validate the correct instruction.
You can see below how it works via this YouTube link.
And can see the created customer as below.
