Hire SAP Integration Consultants

Interfaces are where an SAP programme loses money without anyone noticing. A broken interface that throws an error gets fixed the same morning. An interface that silently posts the same goods receipt twice, or drops a status update because a mapping expected a field that was optional, is found in a stock reconciliation six weeks later — and by then nobody can say which of the two thousand documents are wrong.

So the design question is never only how the message gets across. It is what happens on the second delivery. Middleware retries. Operators reprocess failed batches. A timeout that was actually a successful post looks identical to a failure from the sending side. Every one of these replays the document, and an interface with no notion of having seen it before will duplicate it. Idempotency — a business key checked before posting, and a defined answer for what the caller is told the second time — is the difference between an interface and a liability.

The second question is who fixes it at eight in the morning. A great deal of SAP integration error handling is designed for the team that built it: a monitor nobody outside basis can read, a message that says a mapping failed without saying which document failed it. If someone in operations cannot see what is stuck, what it was for, and what happens if they release it, the interface will be escalated every time rather than handled.

We staff people who have supported interfaces as well as delivered them, because the two jobs teach different things and only one of them teaches this.