When importing an invoice or sales receipt you can specify a discount amount to be applied.
ProRata will also try to automatically apply any discounts it finds on the invoice.
Applying a discount using a negative line item
When creating your invoice you can add a line item with a negative amount that can be applied to the same product/service type. As an emample: If you are invoicing a customer for "Annual Software Service" for $12,000 and want to give them a $1,000 discount, add another line item for "Annual Software Service" with an amount of -$1,000.
Applying a discount using a special discount item
You can also create special discount products in your accounting software that are used specifically for applying discounts.
For example: You would have an "Annual Software Service" product and an "Annual Software Service Discount" product in your accounting system.
In ProRata, under the product configuration for "Annual Software Service" choose "Annual Software Service Discount" as the Discount Item.