Invoices submitted by Quickbooks are being rejected under Invoice Capture

[LCiri]

We have vendors using Quickbooks and submit their invoices to us that way. When looking under  Invoice Capture I see they have been rejected therefore never being uploaded for processing. Why? This is concerning. Is there a workaround within Concur? Does the sender receive a rejected email?

[hadkins]

We have found that we need to get the invoice and print it as a pdf to submit it.