Apparatuses, methods, and systems are disclosed for NSSAI configuration. One method includes determining a configured network slice selection assistance information for a public land mobile network for a remote unit in response to a trigger from an access and mobility management function. The access and mobility management function, a network slice selection function, or a combination thereof determines the configured network slice selection assistance information. The method includes providing the configured network slice selection assistance information to the remote unit via the access and mobility management function.