We are in implementation, designing our forms. For the statement form, we're being told that Netsuite doesn't tie payments to invoices. We'd like to show the invoice date, number, original amount, then any payment applied to it (sometimes this would be multiple lines, as it could be a large invoice with multiple payments throughout the month). We've even asked for a Saved Search that could replace the contents of the line item area of the statement, or just include a report with each statement that would break it down this way. Our vendor is saying this isn't possible. Any help?

Just to be clear, you're trying to get Applied Payment information to appear on a printed/emailed Statement form, correct? Not just a Saved Search that shows these fields in the results. These are two different things. Not sure if this will help, but check out the SuiteAnswers article "Show Total Unpaid Amount Due for each Invoice on a Customer Statement". This is also not the same as applied Payments, but may give some alternative ideas.