what is the purpose of those fileds in Navision? I have a company working in a duty free environment and I need to know how much money need to be paid for excise taxes to the government. can i use them , if yes how? thanks
No purpose at all. The fields were used in [very] old versions and they remain in current versions as they perhaps are used in customized solutions.
You were right. those fields are not used a all even in Nav4