thanks a lot for your quick answer. But the problem is that, if we create a custom lookup the associated new field does not work related with the field Department OBS as it should.
(It should update the department OBS Path in accordance with the selected department)
That is an impasse: you cannot modify the lookup and you cannot use another lookup. Just live with it.
Maybe you could use a process to update the department OBS path or wait till the business rules come and see if a rule can do that.
Hi Martti, thanks a lot for your recommendation. We will try to implement it with a process.