These receivables management engines include: SAP Credit Management – to help companies implement a single company-wide credit policy and use credit analysis results to calculate credit limits – including embedding credit checks into key operational processes SAP Biller Direct – an electronic bill presentment and payment solution that 1) lets customers download or pay invoices via bank transfer, card, etc., as well as start the dispute process, and 2) allows vendors to see the approval and payment status of their invoices, including inquiry functionality SAP E-Invoicing for Compliance – an e-billing solution that sends customers validated, signed invoice PDFs via email or invoices via EDI – including the compliance checks required in 37 different countries SAP Collections and Dispute Management – modules that provide workflow and process support for managing disputes as well as a module that generates prioritized collections worklists that help collections specialists proactively contact customers.