Joule should not be viewed as an AI model with unrestricted access to SAP S/4HANA. A secure, governed architecture keeps AI reasoning, enterprise identity, BTP connectivity, backend access and SAP authorization as distinct control points. Joule may reason without accessing ERP, and when business data or actions are required, access follows governed connectivity and identity propagation so that SAP S/4HANA remains authoritative for user permissions. This blog explores how these trust boundaries work together across the AI and ERP paths, and how identity, authorization, data protection, guardrails and end-to-end auditability help secure the complete Joule interaction.

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