- Charging for no shows
- Charging for wrong project code
- Charging for services not on the program plan or after program plan is closed
- Not charging correct unit amounts (1 unit = ½ hour; 2 units =1 hour)
- Putting Pretrial clients on the Probation invoice
- Adding late invoices to current invoices; each month should be billed on a separate invoice
- No original signature on invoice
- Not providing all documentation with invoice
- Charging the incorrect unit price (See Order for Supplies or Services for correct prices)
- Multiplication errors
- Incorrect Blanket Purchase Agreement (BPA) numbers on invoice