Try each of the following steps in order until the error is resolved:

 
     
    • In Configuration, click Products and Billing Items.
     
    • Open the Billing Item that was not included in the drop-down menu.

      Or In Records, Products and Billing Items, open the specific billing item.
     
    • Ensure the Dates listed in the Item can only be used from fields include the Transaction date of the transaction being added. If not, add the fee for that date range.
     
    • Ensure Active is selected for Status.
     
    • If adding a Fee Schedule, and the fee was created as a manual fee, re-enter the fee in Configuration as an Automatic Item.