I had this kind of problem recently but not in Qatar in my homeland, I believe this kind of issue is common at everywhere, I had to pay about 500 riyals for it,
we make this mistake mostly when we were in hurry & careless but if they really want to pinpoint they can bcoz you cannot memorise every single part of the car,
Nowadays mobile phone has a good capability of video recording so my suggestion is take a clear video recording around the vehicle & verify those previous sign/marks before you sign, preferrably you can make a note in agreement that you have taken a video recording on so & so date.
I had this kind of problem recently but not in Qatar in my homeland, I believe this kind of issue is common at everywhere, I had to pay about 500 riyals for it,
we make this mistake mostly when we were in hurry & careless but if they really want to pinpoint they can bcoz you cannot memorise every single part of the car,
Nowadays mobile phone has a good capability of video recording so my suggestion is take a clear video recording around the vehicle & verify those previous sign/marks before you sign, preferrably you can make a note in agreement that you have taken a video recording on so & so date.