The Tax Department shall establish and administer a joint controlled vocabulary that makes it possible to communicate the same meaning on the same case or thing. This shall be achieved by the help of a term management process and an IT system that supports this process. This procurement comprises the last mentioned IT-system. The IT-system shall enable the department to carry out the above mentioned, including, but not limited to registration, administration and accessibility of terms with term definition. The procurement also includes maintenance of the IT-system as well as an option for the procurement of associated consultancy services.