The development of modern technology requires companies to increasingly compete. It does not only apply to big companies but also small companies like Micro, Small and Medium Enterprises (MSME). In Indonesia, most MSME runs without the use of information technology, one of which is the XYZ weaving conventional business. The XYZ Weaving Business is a manufacturing company that produces products in the form of Endek Fabrics and Custom Fabrics. Endek is a term for ikat woven fabric originating from the island of Bali. Endek woven fabric has a variety of unique motifs from sacred to reflect the feel of nature. Meanwhile, custom weaving is a term for woven fabric that has a homemade motif and usually comes from the wishes of the customer. The business has an income above 50 million rupiahs every month with a total production of 2000 meters of fabric, besides, their customers are from companies and individuals. However, their processes are still managed conventionally, resulting in internal problems such as unorganized data and information due to the lack of integration among company divisions. Furthermore, it also results in disrupted service to customers and the company could suffer losses. ERP is a very popular concept to use in companies because it has a functional area that suits the needs of the company. The ERP used in this study is based on Open source, namely Odoo. The results of research with the implementation of Odoo software by using the Sales, Purchase, Inventory and Manufacturing modules resulting in a more integrated business process change. A test was conducted by using the User Acceptance Testing method to 10 respondents consisting of marketing company employees, administrators, material purchases, warehouses, and production. The total score obtained is 713 and is located in the third quarter, which means the system is considered quite successful to be implemented in XYZ Weaving.