EIP4 is a comprehensive platform by L&T Construction for efficient project management and collaboration. EIP4 is the employee portal of L&T Construction, providing access to various services and resources for employees. Learn how to register your invoices and credit notes in EIP 4 . 0 , the enterprise resource planning system of L&T Construction. Follow the steps to upload documents, select payment terms, generate invoice registration number and QR code, and send them to SSC Chennai. EIPeConnectUI is the Enterprise Integration Platform of L&T Construction for managing work-related activities.