Walked Guest  is when a guest Room  is not available for a confirmed guest (i.e. the Hotel  is overbooked), then the Hotel helps the guest find alternative Accommodation elsewhere. This is known as 'walking the guest' to another hotel.
Each hotel has its own walk compensation policy that the manager will follow during this process. This usually includes paying for transportation to the hotel and covering any difference in the room rate at the hotel the guest was 'walked' to.