Object "some-number" specified in the request cannot be found.
This message occurs when a payment from InvoiceASAP is trying to be applied to an invoice in QuickBooks that has already been marked as paid.
InvoiceASAP cannot find the open invoice, because it's already been paid.
We will be adding more describe messaging to the InvoiceASAP Connector.
In the meantime, the resolution is to delete the payment from your QuickBooks and let the payment from InvoiceASAP mark the invoice as paid.