ERP (Enterprise Resource Planning) is an integrated information system to manage a company's business processes. Small and Medium Enterprise (SME) needs ERP but lack the funds necessary. Open Source System ERP (OSS ERP) becomes the choice for applying ERP by SMEs for the price and customizability. This research aims to identify the characteristics and configuration of e-commerce module OSS ERP at KKPS (Koperasi Karyawan PT SRI) using OSS ERP Odoo. Sales Section is the most important part in Employees Cooperation PT Suryaraya Rubberindo Industries (KKPS). Most of the turnover is generated from the sales process. Currently the sales process is still done manually and the procurement of goods has not been computerized, thus causing delays in data transmission from one part to another. To improve the sales process in KKPS, a system that supports the integration of each part is needed. Data integration with Enterprise Resource Planning (ERP) system implementation is expected to help the sales process to be more efficient. The selected ERP system is Odoo, as it is an open source ERP application that has various business application programs. Business Process Modeling Notation (BPMN) is used to create business process analysis and modeling so that KKPS performance can be improved. Simulated purchase of goods is done to ensure the Odoo Website and E-commerce module runs well. After the implementation of Odoo Website and E-commerce module on KKPS, information on KKPS is more accessible to its members. The purchase of products or services through KKPS can be done more easily through e-commerce.