Automated, fast and transparent invoice processing The Purchase-to-Pay solution processes incoming invoices for all entry gateways, (paper based, EDI, PDF via Mail), with the availability of a validation center, flexible approval workflow, invoice entry ledger and Task manager. The solution enables customers to have a fast, secure, easy to use and transparent invoice process with full audit trail. The solution works as an Add On, complementary to the SAP standard FI and MM module.