Implementing an enterprise resource planning (ERP) system in your business impacts all departments including finance, HR, sales, and manufacturing. An ERP implementation is the process of planning, configuring or customizing, and deploying your ERP system through your whole business. To ensure your implementation goes well, you should consult key stakeholders before and during the implementation so your entire business is ready for the change. The process of implementing an EPR system usually takes months as it is involves cleansing and migrating your existing data into a new system.