Customer Type list (CTYPE)

Import and export files can contain the list of customer types you use in QuickBooks. The keyword for the Customer Type list is CTYPE.

NAME (Required) The customer type. If the customer type is a subtype of another customer type, the name includes the name of the parent types, beginning with the highest level type. If you are creating an import file, use a colon (:) to separate subtype names.
TIMESTAMP (Export files only) A unique number that identifies the company file from which you exported the Customer Type list.
REFNUM (Export files only) A unique number that identifies an entry in the list.