{"id":10400,"date":"2026-02-25T14:07:08","date_gmt":"2026-02-25T13:07:08","guid":{"rendered":"https:\/\/www.retarus.com\/blog\/us\/?p=10400"},"modified":"2026-02-25T14:13:24","modified_gmt":"2026-02-25T13:13:24","slug":"navigating-the-s-4hana-migration-part-3-turning-messaging-risk-into-modernization-opportunity","status":"publish","type":"post","link":"https:\/\/www.retarus.com\/blog\/us\/navigating-the-s-4hana-migration-part-3-turning-messaging-risk-into-modernization-opportunity\/","title":{"rendered":"Navigating the S\/4HANA Migration \u2013 Part 3: Turning Messaging Risk into Modernization Opportunity"},"content":{"rendered":"\n
This article concludes our three-part series on SAP\u00ae S\/4HANA migrations. In Part 1<\/a>, we looked at industry research highlighting how integration issues drive migration delays. In Part 2<\/a>, we narrowed the focus to how business messaging must adapt to changing integration standards.<\/p>\n\n\n\n Many organizations assume that existing communication processes and interfaces will transfer seamlessly to S\/4HANA cloud solutions. That assumption is risky. With SAP\u00ae BTP as the strategic middleware layer, integration patterns fundamentally change. HTTPS\u2011based APIs and event-driven architectures become the standard. Legacy BC\u2011SMTP and BC\u2011RFC connections from the NetWeaver world cannot simply be lifted and shifted, and they are no longer the basis for future certifications as NetWeaver are phased out.<\/p>\n\n\n\n When legacy BC-Con integrations for business messaging are no longer supported, migration projects encounter unexpected obstacles. What appeared to be straightforward transition suddenly requires the redesign of business-critical communication processes under time pressure, putting timelines and project success at risk.<\/p>\n\n\n\n Modern enterprises need more than basic connectivity. They require future-ready communication flows that are embedded into their SAP landscape. Our validated integration packages and messaging connectors for SAP BTP extend native SAP capabilities, enabling secure document exchange and transactional messaging directly within SAP processes. By leveraging SAP-certified integration patterns, organizations can avoid custom workarounds and unlock a truly end-to-end experience for email, fax and SMS.<\/p>\n\n\n\n Fax communication is deeply embedded in SAP landscapes, often through on\u2011premise fax servers connected to SAP PI\/PO and SAPConnect. When moving to S\/4HANA and BTP, these legacy integrations quickly become a barrier to automation and digitization. Rather than carrying outdated fax infrastructure into the new architecture, the migration is the ideal moment to modernize and move to a cloud-native fax solution aligned with SAP\u2019s integration strategy on BTP.<\/p>\n\n\n\nLegacy messaging assumptions create risk<\/h2>\n\n\n\n
The Solution: End-to-End SAP BTP Integration<\/h2>\n\n\n\n
A practical example: Cloud Fax Connetor for S\/4HANA via BTP<\/h2>\n\n\n\n