About This Architecture

CORA VIM is an end-to-end invoice verification and approval platform integrating SAP S/4HANA, SAP BTP, and Azure services through a multi-swimlane architecture. Users access a SAP UI5 frontend via SAP Approuter and XSUAA authentication, which routes to a CAP backend service orchestrating workflows, OCR extraction via SAP Document AI and AI Core, and S/4HANA integration through standard and custom APIs. The system persists invoice metadata, PDFs, and OCR cache in PostgreSQL and object storage, while Mail Integration scans Microsoft 365 mailboxes via Microsoft Graph API for automated invoice ingestion and approval notifications. This architecture demonstrates best practices for enterprise document processing: separation of concerns across authentication, workflow, AI, and ERP layers; audit-ready persistence; and seamless third-party integration for mail-driven workflows. Fork and customize this diagram on Diagrams.so to adapt swimlanes, add payment gateway integrations, or extend OCR models for your procurement landscape.

People also ask

How do you design an end-to-end invoice verification and approval system that integrates SAP S/4HANA, SAP BTP, and Microsoft 365 with OCR and workflow automation?

CORA VIM demonstrates a multi-swimlane architecture separating users and entry (SAP Approuter + XSUAA), SAP BTP services (CAP backend, workflow engine), S/4HANA integration (master data, procurement, posting APIs), and third-party services (Microsoft Graph, Document AI). This design ensures secure authentication, scalable document processing, and audit-ready invoice tracking across approval stages