Interfaces & Connectors
Most integration projects do not fail on the protocol but on what comes after it: error cases, repeatability, authorisations and the question of who gets up at night when a posting hangs.
From a connection to a dependable integration
Establishing a connection to SAP is rarely the problem. RFC, IDoc, OData, REST, SOAP – the routes are well known. The work begins with the questions behind them: what happens on a partial failure in the middle of a document chain? How do you prevent a repeated call from posting twice? Under which user does processing run, and what does internal audit see of it? These points decide whether an interface holds up in production.
For the most common case – posting data from a .NET or Java application straight into SAP – we have a ready-made basis in the CaRD Posting Connector. Instead of building a dedicated RFC bridge for every connection, you use a proven component and concentrate on the business logic. Product detail lives at posting-connector.de (German).
The same task arises towards third-party systems: CAD, MES, web shops, CRM, time recording or – increasingly – AI services that need access to SAP data. We know both the SAP side (engineering change, BOMs, routing confirmations, shop-floor scenarios) and the technical counterpart, and in the interface world that is the decisive advantage: there is nobody to hand the problem on to.
Older technologies are part of it too, wherever they are still in use – the .NET connector as well as ActiveX/OLE scenarios towards Office applications or complex print control for plots and conversions.
At a glance
- RFC, IDoc, OData, REST, SOAP & SAP Gateway
- Posting from .NET and Java applications
- CaRD Posting Connector as a proven basis
- Error handling, idempotency & restart points
- Connecting CAD, MES, CRM, shop & AI services
- Operating concept: monitoring, authorisations, logging
Technologies
We choose by requirement, not by habit.
- RFC & BAPI calls
- IDoc for asynchronous mass processing
- OData/SAP Gateway for modern clients
- REST & SOAP for third-party systems
- ActiveX/OLE for Office scenarios
What is often forgotten
The points at which interfaces fail in operation.
- Idempotency: no double posting on retry
- Cleanly rolling back partial failures in document chains
- Technical user & scope of authorisations
- Traceable logging for internal audit
- Monitoring and alerting on failure
Typical connections
Scenarios we implement regularly.
- Creating sales orders and purchase orders
- Confirmations from production and shop floor
- BOMs and engineering change
- Documents and attachments on business objects
- Master data synchronisation with external systems
AI services on SAP
New, but asked for regularly by now.
- Controlled read access to SAP data
- Write-back only through validated transactions
- Authorisations and data protection from the start
- On-premise operation if preferred
Operations & maintenance
An interface is never finished, it is operated.
- Documentation and handover to your team
- Adjustment at release changes
- Maintenance and support agreement optional
- Development in our own CaRD namespace
Frequently asked questions
Can you connect systems that have no SAP interface?
Yes – that is the normal case. We build the SAP side and the counterpart and choose the technology by requirement: RFC and BAPI for synchronous postings, IDoc for mass processing, OData or REST for modern clients.
What is the Posting Connector?
A ready-made component that lets .NET and Java applications post directly into SAP without a dedicated bridge for every connection. Details at posting-connector.de – the architecture consulting around it happens here.
How do you make sure nothing is posted twice?
Through idempotency keys and a defined restart point: a repeated call with the same reference does not create a second document but returns the result of the first. Combined with clean roll-back on partial failures in document chains.
Do you also operate the interface?
On request yes – from documentation and handover to your team through to a maintenance agreement including adjustments at release changes.
Does this match your project?
Talk directly to our consultants — no detours.