Event Mesh
From ABAP the concern runs both ways: a RAP business object raises events for subscribers, and a program publishes to or consumes from an outside broker such as Kafka, an MQTT broker or AWS SNS.
Overview
RAP business events: an event defined in a behaviour definition is raised with RAISE ENTITY EVENT, and an event binding maps it to an event type. From ABAP 7.53 the kernel also supports MQTT.
Not covered: At RAP events and MQTT. Producing to Kafka, receiving AWS SNS notifications, and MQTT on releases before 7.53 are what the community connectors add.
Policy
PolicySAP API Policy 4.2026a§ 2.2.2, 3, FAQ 12, FAQ 27, FAQ 38AlwaysAn ABAP event integration exposes inbound access to SAP APIs or becomes a systematic or large-scale extraction or replication path. An outbound notification or callback alone is not enough.
- § 2.2.2 AI call sequences and data extraction. Outside SAP-endorsed architectures, data services or expressly identified pathways, the policy prohibits specified agentic API use and systematic or large-scale extraction.
- § 3 Monitoring and remedies. SAP states that it may monitor API use and take enforcement actions when use does not comply with the documentation and policy.
- § FAQ 12 Outbound interfaces. The accompanying FAQ distinguishes external consumption of SAP-provided services from outbound notifications or callbacks sent by an SAP system, which it places outside this policy's scope.
- § FAQ 27 Custom-developed APIs. Customer-namespace ABAP interfaces are not prohibited merely because they are custom, but their underlying SAP dependencies and usage pattern still determine whether the use aligns with the policy.
- § FAQ 38 Large-scale data access. Large-scale extraction and replication must use access mechanisms and patterns documented for that purpose rather than treating a transactional or custom API as a general bulk-data surface.
Direction and usage pattern decide the policy relevance. Customer ABAP code may publish events outward, but it must not be used to bypass SAP API controls or substitute a custom event stream for a documented bulk-data pathway.
SAP API Policy 4.2026a →Artifacts
Content
Group by
Piece, what it offers
Clean Core by Design: Event Enablement Cockpit as a Core Integration Enabler in SAP S/4HANAClean Core by Design: Event Enablement Cockpit as a Core Integration Enabler in SAP S/4HANAWalks through wiring an on-premise SAP S/4HANA system into Event Mesh as an event producer, using the Enterprise Event Enablement framework: creating the service instance and its service key, then an RFC destination and OAuth 2.0 client configuration in SPRO so a channel can publish native S/4 business events over AMQP or MQTT. Covers the channel's reconnect and quality-of-service parameters and activating the Event Discovery Service, and notes that SAP ECC needs a third-party add-on for the same events since S/4's native Business Events are not available there.HammadSharif1, published 2026-06-01
Enhancing SAP Business Events with Custom Payload Fields using RAPEnhancing SAP Business Events with Custom Payload Fields using RAPWalks through enriching an outbound Business Partner event for Event Mesh that by default carries only the partner ID: a derived RAP business event, raised from a behaviour definition with RAISE ENTITY EVENT and bound through SWE2 event linkage to a receiver function module, adds first and last name to the payload. The custom event is defined on a root view entity over BUT000 and verified in /IWXBE/EVENT_MONITOR, where the enriched JSON payload shows the extra fields reaching subscribers without an additional callback to the source system.BramhaniG, published 2025-10-27
Integrating SAP S/4HANA Invoicing with KSeF Using SAP Event Mesh and CAPIntegrating SAP S/4HANA Invoicing with KSeF Using SAP Event Mesh and CAPA concrete regulatory deadline rather than a demo topic: every Polish invoice has to pass through KSeF, the national e-invoice platform, and this proposes the route — S/4HANA business events onto Event Mesh, a CAP application consuming them and talking to KSeF. Short, and offered as an example to argue with.Yahor, published 2024-08-29
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A Natural Choice: SAP AIF can now expose events to Advanced Event Mesh to power your EDAA Natural Choice: SAP AIF can now expose events to Advanced Event Mesh to power your EDAAnnounces AIFAEM, a new software component of SAP Application Interface Framework that lets SAP ECC and older SAP S/4HANA backends create custom events from BOR objects and IDocs, in CloudEvents format, and publish them to SAP Integration Suite, advanced event mesh — closing the gap for backends that predate S/4HANA's own RAP-based standard events. It ships as the ABAP add-on AIFAEM731 (SAP NetWeaver 7.31, i.e. ECC) or AIFAEM800 (NetWeaver 7.55 and later), and its usage is included in an advanced event mesh subscription.KStrothmann, published 2024-07-29
SAP Event Mesh: S4 HANA On-Prem and SAP CI(BTP IS) through WebSocket and WebhooksSAP Event Mesh: S4 HANA On-Prem and SAP CI(BTP IS) through WebSocket and WebhooksA step-by-step walkthrough of wiring Event Mesh to publish and consume events between an on-premise S/4HANA system and Cloud Integration, contrasting persistent queues (one subscriber, kept until consumed) against unpersisted topics, and WebSocket's AMQP transport against webhook delivery for the same queue. Two tested findings support it: a queue consumer running in continuous consumption mode receives a message ahead of a webhook on the same topic, and a message stays queued and is retried (almost 8770 times in under a minute, in the author's test) until the consumer processes it successfully.FarooqAhmed, published 2023-10-03
[Blog Post] SAP Event Mesh - Consuming S4 events simultaneously in CAP-based applications and SAP Integration Suite[Blog Post] SAP Event Mesh - Consuming S4 events simultaneously in CAP-based applications and SAP Integration SuiteOne S/4HANA event, two consumers at once: a CAP Java application and SAP Integration Suite. Late in a long Deep Dive series and written as such — the queues, the S/4HANA connection and the Integration Suite side were all established in earlier posts, so this is the part where they meet.AyushKumar and vipul.khullar, published 2023-03-24
[Blog Post] SAP Event Mesh - Consuming S4 events simultaneously in CAP-based applications and SAP Integration Suite
Event Mesh changed in @sap/cds 10.0.3, 2026-07-02. Affects Runnable code.
Details
Coverage
Designs that place it
Designing Event-Driven ApplicationsDesigning Event-Driven Applicationsthird-party event broker
For your agent
- Ref
capability:event-mesh- JSON
- /capabilities/event-mesh.json
- MCP
- Connecting an agent