To add a rebate item to an existing transaction:
Go to the transaction where the rebate is to be added.
Click Add New Item.
Set the product, unit, product price and quantity.
Click Create.
To create a standalone rebate item:
Go to the Address where the rebate needs to be under.
Click Raise Transaction.
Set the product, unit, product price, quantity and set a ticket number.
Click Create Transaction.
Once the transaction item has been created, go to the ticket number and view it. From there:
Click Edit.
Click Full Edit.
Click Edit Under Transaction Items.
Amend EventItemTypeID to 8.
Amend ProductPriceBuyOrSell to 'B'.
Click Save.
This will then be picked up when completing a Rebate Invoice Run.