2. One-Time Invoice

A One-Time Invoice is created as a demand for payment for ad-hoc items that are not BOQ items. Some common scenarios for creating One-Time Invoices are:

• As an invoice for an advance payment.
• As an invoice for the customer retention amount that the customer deducted on previous invoices/RA Bills.
• For reimbursement of expenses etc.

Once the invoice is created and approved it needs to be certified. Certification posts the accounting entries and creates a Receivable Asset (DR to Sundry Debtors). The process for creating an One-Time Invoice is: