ERP implementation needs clear goals, strong sponsorship, and early planning. Green lights: defined KPIs, cross‑functional team, early data migration and testing, minimal customizations, mock cutover, and a hypercare plan. Continue to update documents on process changes. Track change management. Red flags: unclear scope, late data loads, poor integration testing, heavy customizations, weak training, and no update strategy. After go‑live, maintain quarterly reviews for new features and continuous improvement to avoid technical debt and maximize value. In short: plan early, test thoroughly, train users, and stay evergreen for long‑term success.