The SAP Business One user licenses are given on a named user licensing model. Each user name needs to have a license granted to it. A named user is one who has the authority to access the licensed SAP Business One. The customers of SAP Business One can buy various types Licenses from SAP. The Licenses have altogether different levels for the different users. There are mainly 4 license user types for SAP Business One. 1. Professional User 2. Limited CRM User 3. Limited Logistics User 4. Limited Financial User Check out the details and the module-level rights in the doc