Inventory, field mapping, trial runs and totals checks: how to move data out of a legacy system and how to evidence that the transfer really was complete.
Duplicate customer and product records: how they arise, how similarity matching and address normalisation find them, and how to merge without losing history.
Customers, articles, suppliers: which system leads, which fields are mandatory and how to clean up master data without halting your daily operations.
From the circulation folder to a digital approval: responsibility, deputies, deadlines, reminders, dual control, value limits and a sound audit trail.
Monitoring interfaces beyond availability: business-level checks, thresholds without false alarms, escalation to a named owner and logs with defined retention.
Why an unprotected retry creates a second invoice and how idempotency prevents it: operation key, check before writing, log of keys, finding old cases.
Detecting, reporting and bridging silent interface failures: heartbeat, time windows, volume reconciliation, queueing and a defined restart procedure at work.
Daily file transfers between two systems: six typical failure modes from delimiters to duplicate deliveries, and how to check, log and report every one of them.
Middleware brokers between systems that cannot talk to each other directly. When a direct connection is enough and when the extra layer starts to pay off.