The category defined in the import file must be one of the billing item categories defined in Records, Products and Billing Items:  Flat Rate Item, Per Usage Item, Product, Refund Item, Finance Charge Item, Sales Tax Item, Advance Deposit Item, Financial Aid Item, TRP Item, Automatic Item: Vary Amount By Grade, Automatic Item: Vary Amount and Schedule by Grade, or Automatic Item: Single Amount and Schedule.

Replace any entries in the import file that do not match one of the categories above, then validate and import.