The purpose of the IAConnect Post Processor functionality is to update invoice documents in OnBase with payment information from the corresponding voucher in Costpoint. A voucher record for an invoice document must have been successfully created in Costpoint prior to being processed by this service. Invoice documents are moved to the Post Processor queue and wait there for a check to be generated for that voucher in Costpoint. Once that happens, the AP Status flag in Costpoint is set to Paid, which signals the Workflow to push the invoice document out of the Post Processor queue and hence end Workflow processing for the invoice document. The Post Processor also updates payment status for the voucher to any interim status values up to the point it is marked paid.