The manual payment amount exceeds the amount due on the invoices being processed
What does this mean?:
The amount in the payment was more than the amount of the invoice that was being referenced to.
Make sure that the payment is equal or less than the amount of invoice that was being referenced to. For more information, check out this section on how this is done : http://help.infusionsoft.com/userguides/sell-online/create-an-order/add-a-payment-to-an-existing-order
For Users who purchased the Infusionsoft-QuickBooks or Infusionsoft-Xero application users, This may happen to the recipes that attempt to sync payments.