Who Really Owns ERP Customisations Once the System Goes Live?

Going live with an ERP system does not mark the end of technical work, as custom workflows, integrations, and reports built around the platform all require a dedicated maintenance owner. Responsibility is layered: the ERP vendor covers the standard product, the implementation partner handles the agreed deployment scope, and the internal team owns business rules and processes. As businesses evolve — adding supplier portals, new reporting formats, or machine-data sources — unmaintained customisations tend to push work back into spreadsheets, emails, and manual checks. A 2026 Singapore ERP integration guide by Workato highlights the distinction between the one-time integration build and the ongoing maintenance needed as APIs, connected-system schemas, and compliance requirements change. Experts recommend mapping every point where work leaves the ERP and returns to a person, then assigning a clear owner for each gap before any fix is released.