A company is a client company of a Service Provider or Expediter. Details that can be recorded for companies in this screen include the name, address, managers, default currency and order number prefix.
The order number prefix, as the name implies, is a value that gets prefixed to all order numbers of the company. This can be any value and is typically a 3 letter abbreviation of the client company name, to easily distinguish orders by company. Order numbers start at 00001 for each company and so the prefix allows the Service Provider or Expediter to keep these order numbers unique. Order number prefixes can be added after orders have been created for the company. If this is the case, you can check off the option 'Update prefixes of existing Orders' to ensure all orders for the company consistently start with the same prefix.