However, beyond that, what's wrong? You may decide, for instance, that you don't want to correct it. For instance, suppose it says your lot is 1/4 acre, but it's actually 3/4 acre. Changing it will increase your tax assessment, with no other benefit to you. Same with number of bedrooms or baths. In fact, you might be opening up a can of worms. For instance, suppose you bought your home with 3 beds/1 bath. Then you added a second bath. But the contractor didn't get the necessary permits, so the city/county is unaware of the second bath. You might find that you'll have inspectors coming over to make sure that everything's up to code, and that you pay fines or penalties because your contractor didn't do all the necessary paperwork.
And sometimes it may just not matter. When I moved into my home, there was no natural gas service, so it was all electric. A few years later, the gas lines were extended to where I lived, and we switched over to gas heat. The public record still shows we have electrical (heat pump) heating. It's incorrect, but I'm not sure it's worth the hassle to change that.
Hope that helps.