If you change your field of study during your BA studies, there is no need for an assessment. You can mark the change at your semester control sheet. If you have already submitted it, please inform the Admission Office. As soon as your field of study appears at KSL, you can move your courses after you have discussed this with the study supervisor of your new subject.
There has to be an assessment if you switch from a BA program to a non-consecutive Master program.
For further information, please consider this website.