1. A verification system for automated verification of register information for an electronic system, the verification system comprising: a design database containing a description of the electronic system, a register description database containing a behavioural description of registers, a customization information database for storing customization information specific to a particular version of the electronic system, a stimulus generator arranged to generate verification stimuli by combining information stored in the register description database with customization information, a check function database, a simulator operably coupled to the design database and arranged to execute said verification stimuli in accordance with at least one check function from the check function database and arranged to generate a simulation result, and a mismatch identification module arranged to evaluate the simulation result and to identify a mismatch between an expected behaviour of a register access and an actual behaviour of said register access and arranged to enable identification and correction of a root cause of a mismatch within the design database, the customization information database or the register description database.