Template:Studienplan Transferable Skills
4,5 ECTS have to be courses categorized as Transferable Skills. These courses are not organised in modules, although there are some requirements that have to be met.
Some transferable skills are listed in TISS, but it's often possible to use other courses for this category, too. In general, everything focusing on "soft skills", i.e. communication, cooperation, presentation, etc. can be used as a transferable skill.
If in doubt, contact the dean/vice dean of studies and get a written confirmation for being able to use a specific course as a transferable skill.