Xetex Xebra provides features to help distributors manage inventory. Within Xebra, inventory is divided into two major categories: General Inventory and Customer Specific Inventory (CSI). General Inventory consists of products that a distributor stores that can be sold to any customer. CSI (Customer Specific Inventory) consists of products that are stored for specific customers. With CSI, distributors might store inventory for a customer that the customer owns or inventory that is allocated for a customer that will be billed when it is released to the customer. General inventory is always owned by the distributor and billed to customers when it is released.