The easiest way to see the file layout for importing Vendors is to export an existing vendor. You can do this from sample data if you do not have an AP data set already defined. Choose to include a Header file to more easily see the order of fields required.
In the Import Vendors function, on the second screen (Import field selection), the right side contains the same list of fields required for importing. If you click on a specific field, the field format is diplayed below. You can determine if a string/date/number is expected as well as the field length.
The Control Acct set and Terms code fields are both Strings, so they must be surrounded with quotes. The Vendor Status field is a number of maximum 2 digits, so no quotes are expected.
Regards,
Softrak Support