A Level 2 PunchOut implementation is also known as OCI5 in SAP SRM. It allows the user to shop within their e-Procurement system’s built-in e-Catalog and then directly PunchOut to the item details page of your web store. This makes the process quicker and more streamlined. However, Level 2 and OCI5 are not commonly used. Extra work and expenses are required by both the buyer and supplier to create, test, and maintain the search index in the e-Procurement system.