When removing an IXXI, as shown in this video, the likelihood of damaging the wall is minimized. An additional tip is to heat the adhesive on the tesa Powerstrips beforehand, for example, with a hairdryer. This way, the adhesive on the tesa Powerstrips becomes warm and releases even more easily.
Please note that whether or not damage occurs to the wall may depend on the type of wall, moisture level, and so on. However, in general, an IXXI can be removed without causing damage.