An exit inspection can reveal a dark mark on a living room wall that nobody noticed during the final walk-through. The owner may want the repair charged to the tenant, while the tenant may remember seeing the mark before moving in.
A clear property condition report gives both sides a dated record to examine.
It cannot answer every question about cause or responsibility, but it replaces uncertain recollections with observations made at a defined time. Its usefulness depends on detail, consistent wording, suitable photographs, and a candid account of what the inspector could not see.