What invoice generation does here
It closes the gap between the price a rep agreed and the document a customer receives. The quote is built on the deal from products and rates already in the system. When the customer accepts, that quote becomes the invoice. The customer record then holds the conversation, the quote, the invoice and the payment status in one place.
The gap this removes is where most small-business billing errors live. Somebody reads a figure off a message, types it into another system, misses a line item or applies last quarter's rate, and the customer receives a document that does not match what they were told.
