When KeHE is paying an invoice, they will issue a row in K-Solve for your invoice, using your invoice number, and saying how much they're paying on the invoice.
If KeHE thinks there is any reason they shouldn't be paying the full amount invoiced, aside from any payment terms discounts, they typically handle this by issuing invoice adjustment deductions and using their invoice adjustment form. Check out this example below.
To find this in K-Solve, you'll look for your invoice number plus "IA" appended to it. So if your invoice is INV1234567, the invoice adjustment version would be INV1234567IA, with a negative dollar amount next to it.
To be able to see something like the image above, you'll need to look on the far right of the invoice adjustment row in K-Solve, click the documents icon, and then download the PDF that comes up in the popup. This will give you the details on the invoice adjustment deductions.
The types of deductions that can come on this form are pretty wide. You can see quantity or price discrepancies, off-invoice amounts either negative (if KeHE thinks they didn't receive an allowance or discount they expected) or positive (if they're refunding some money that they think they're not owed due to perception of receiving less product than billed for), allowances like that Connect BI Allowance, fees for administration, overages, and other pricing or contractual charges that tie to specific invoices or orders.