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valantic waySCI
Connect third-party systems to SAP S/4HANA with waySCI
waySCI (Smart Cloud Interface) is valantic’s SAP-certified interface that bidirectionally connects SAP S/4HANA in public cloud, private cloud, and on-premise environments with third-party systems. It uses SAP-released APIs, makes no modifications to the standard, and runs directly in the SAP system. SAP S/4HANA remains the system of record. IT and SAP teams run one interface instead of multiple point solutions.
Key facts at a glance
waySCI: SAP integration for third-party systems
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waySCI (Smart Cloud Interface) is valantic’s SAP-certified interface that connects SAP S/4HANA bidirectionally with third-party systems.
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One interface for SAP S/4HANA: waySCI bidirectionally connects SAP S/4HANA Cloud Public Edition, SAP S/4HANA Cloud Private Edition, and SAP S/4HANA on-premise with third-party systems.
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Clean core Level A: waySCI uses only released CDS views, RAP business objects, RAP business events, and OData V4 services based on the ABAP Cloud model. The SAP standard remains unchanged.
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Runs in the SAP system: By default, waySCI operates as an on-stack extension directly in SAP S/4HANA, with no additional platform and no data duplication.
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Built for high data volumes: After the initial full load, waySCI transfers only changed data (delta or net change), either scheduled or event-driven.
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Standard integration for waySuite: waySCI synchronizes master data, orders, and confirmations between SAP S/4HANA and APS waySuite. Additional third-party systems can be connected via wayConnect.NET.
Where SAP S/4HANA integration gets complicated today
Challenges for IT leaders, SAP owners, and planning teams
Planning systems, procurement platforms, collaboration tools, AI services: every application running alongside SAP S/4HANA needs current data from the ERP system and sends results back. Whether this runs reliably and cost-effectively depends on the interface.
IT leadership perspective
Every integration is a separate project, with its own costs and maintenance effort.
IT leadership perspective
- Interfaces to third-party systems are built as custom developments, each with its own documentation and know-how.
- Every SAP release upgrade requires testing and rework across multiple interfaces.
- Integration costs are hard to plan because the effort starts from scratch for each system.
- Additional integration platforms bring more licenses and operating overhead.
SAP owner and architect perspective
Legacy interfaces don't fit a clean core strategy.
SAP owner and architect perspective
- Existing interfaces rely on unreleased SAP objects or modifications.
- Classic extension techniques are no longer available in SAP S/4HANA Cloud Public Edition.
- Data is replicated to intermediate systems and has to be reconciled there.
- With RISE with SAP or a move to the cloud, existing integrations need to be reassessed.
Line-of-business perspective
Third-party systems and ERP work with different data.
Line-of-business perspective
- Master data and business documents reach the third-party system with a delay, for example through nightly batch runs.
- Results from the third-party system have to be transferred to SAP manually.
- What’s created in the third-party system isn’t visible in SAP—and vice versa.
- Business teams spend time reconciling data instead of focusing on their core work.
How waySCI (Smart Cloud Interface) works
Three layers, one end-to-end connection
- In the SAP system: waySCI reads and writes data exclusively through released CDS views and RAP business objects. RAP business events signal changes, so data can also be transferred event-driven.
- Data transfer: Data is exchanged via REST-based OData V4 services over HTTPS in JSON format, through SAP Cloud Connector if needed.
- Connecting third-party systems: valantic’s wayConnect.NET connector provides the connections to target systems, for waySuite as well as other applications.
What you get
Strictly standard
waySCI uses only SAP-released interfaces and makes no modifications. Your system keeps a clean core and stays upgrade-ready.
Up and running fast
Preconfigured standard APIs speed up implementation and reduce effort.
One interface for everything
A single interface covers multiple third-party systems instead of many point solutions. You have one point of contact for integration and operations.
Built for high data volumes
Large data volumes are processed efficiently. After the initial load, delta management transfers only changed data.
Extensible to your needs
Add your own extensions at any time while keeping your clean core intact.
Predictable and future-proof
Release compatibility and updates are included in the subscription, making costs easy to plan.
Technical specifications
| Supported SAP systems | SAP S/4HANA Cloud Public Edition (SAP Cloud ERP), SAP S/4HANA Cloud Private Edition (SAP Cloud ERP Private, RISE with SAP), SAP S/4HANA On-Premise |
| Architecture | On-stack extension in SAP S/4HANA, ABAP Cloud / RAP |
| SAP objects used | Released CDS views, RAP business objects, RAP business events, OData V4 services |
| Protocol and format | REST / OData V4 via HTTPS, JSON |
| Connectivity | Direct system connection or secure on-premise connection via SAP Cloud Connector |
| Transfer modes | Full Load, Delta Load (Netchange) |
| Triggering | Scheduled or event-driven |
| Deployment | On-stack in SAP S/4HANA (default), with optional connection to SAP Business AI Platform |
| Third-party connectivity | Direct or via middleware (e.g., wayConnect.NET) |
| Clean core | Level A, no modifications to the SAP standard |
| Licensing model | Subscription |
waySCI in waySuite:
Planning in the APS, SAP stays in the lead
waySCI is the standard integration between APS waySuite and SAP S/4HANA. SAP remains the system for orders, materials, costing, and master data. waySuite handles capacity, sequence, and project planning and writes the results back to SAP. This avoids both duplicate data maintenance and a second data set.
From SAP S/4HANA to waySuite
Material and work center master data, routings, bills of materials, planned and production orders, purchase orders, sales orders, project structures, inventory, confirmations
From waySuite to SAP S/4HANA
Optimized dates, sequences, capacity assignments, planned order changes, rescheduling proposals
Custom interface or waySCI?
| Custom point-to-point interface (typical) | waySCI (Smart Cloud Interface) | |
|---|---|---|
| Technical basis | Often unreleased objects, sometimes modifications | Only released APIs, ABAP Cloud (Level A) |
| Release change | Testing and adjustments for each interface | Release compatibility included in the subscription |
| Multiple third-party systems | One development per system | One interface, connected via wayConnect.NET |
| Data transfer | Often full batch reconciliation | Full load and delta, scheduled or event-driven |
| Costs | Project-based, hard to plan | Subscription, predictable |
| Accountability | Spread across parties | One point of contact |
Ideal for companies that …
use SAP S/4HANA (public cloud, private cloud, or on-premise)
are committed to a consistent clean core strategy
process large data volumes or connect multiple third-party systems
Which third-party systems would you like to connect to SAP S/4HANA? Together, we'll review your system landscape, the data objects you need, and the right deployment option.
Product sheet: Connect third-party systems to SAP S/4HANA. All the facts about waySCI on one page.
Benefits, architecture, and technical specifications at a glance.
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Your Contact
Darya Basarhina
Vice President Sales & Manufacturing Practice Lead
valantic
FAQ: waySCI SAP S/4HANA integration
waySCI (Smart Cloud Interface) is an SAP-certified interface developed by valantic that bidirectionally connects SAP S/4HANA with third-party systems. It runs as an on-stack extension directly in the SAP system, uses only SAP-released APIs, and meets clean core Level A. waySCI is the standard integration between valantic’s APS software waySuite and SAP S/4HANA, and it can connect additional third-party systems.
waySCI supports three system variants:
- SAP S/4HANA Cloud Public Edition (SAP Cloud ERP)
- SAP S/4HANA Cloud Private Edition (SAP Cloud ERP Private), including as part of RISE with SAP
- SAP S/4HANA on-premise
In its clean core model, SAP classifies extensions into levels. Level A means an extension uses only SAP-released interfaces and extension points and is built according to the ABAP Cloud model. waySCI accesses SAP through released CDS views, RAP business objects, RAP business events, and OData V4 services and doesn’t change the standard. This keeps release upgrades predictable.
No. By default, waySCI runs directly in SAP S/4HANA, with no additional platform and no data replication. If SAP Business AI Platform, which includes the capabilities of SAP BTP, is a better fit for your IT strategy, waySCI can run there as well.
During initial setup or when a planning environment is rebuilt, waySCI transfers all relevant data (full load). In ongoing operations, only records that have been created, changed, or deleted since the last synchronization are transferred (delta load or net change). Transfers are scheduled or event-driven via RAP business events.
Applications are connected via valantic’s wayConnect.NET connector. Typical examples include APS and planning systems such as waySuite, procurement platforms, collaboration software, and AI services for master data optimization.
From SAP S/4HANA, waySuite receives master data for materials and work centers, routings, bills of materials, planned orders, production orders, sales orders, purchase orders, project structures, inventory, and confirmations. Optimized dates, sequences, capacity assignments, planned order changes, and rescheduling proposals are sent back to SAP.
waySCI is offered as a subscription that includes release compatibility and updates. valantic handles the implementation. This makes integration and operating costs predictable, and you have one point of contact for both the interface and waySuite.