I have splitted the wall into parts. Now I want to remove the parts and keep the original wall. How do I remove/delete/undo the parts that have already been created? I have the partids which I would like to remove.
.ActiveDoc.Delete(partid) doesn't work out and throws an error.
You can accomplish this by deleting the PartMaker associated with the source element:
revitDoc.Delete(PartUtils.GetAssociatedPartMaker(revitDoc, SourceElementId).Id);
Have fun!