Once you have created an invoice for your customer, you may need to adjust the invoice so that the customer does not need to pay the full amount due on the invoice. For example, if you have decided to give the customer a discount. You can use Invoice Item Adjustments (with a credit or charge type) to reduce or eliminate the amount a customer has to pay for an invoice.
Invoice item adjustments allows you to adjust the invoice details, including taxes at the charge level, and have those adjustments reported in the system under the same accounting code as the items that are being adjusted. Thus, the invoice item adjustments help to ensure greater accuracy of reports and accounting integration. An Invoice Item Adjustment fundamentally impact the invoice balance, and can bring the invoice balance to zero. The Invoice Item Adjustment adjusts a specific invoice item, at the line level.
For example, if an invoice has a $100 one-time charge and a $50 recurring charge, plus a line item for $5 in taxes applied to the one-time charge, you may now choose to apply an Invoice Item Adjustment to adjust the $50 recurring charge, which will automatically tie the adjustment to the accounting and revenue recognition code associated with that charge.
The following applies to invoice item adjustments:
Invoice Item Adjustment can be used for several business processes, including writing off the invoice and issuing a credit. For a list of business processes supported by payment operations, see the article How do I understand the "Invoice to Cash" business processes that Payment Operations supports?
You can search for an adjustment by searching for its adjustment number. If you do not know the adjustment number, you can go to your customer account to find your adjustment.