I have never heard of any observation showing that gravitation as described by general relativity (and, so long as you aren't very close to something very massive and aren't travelling at a sizeable fraction of the speed of light, excellently approximated by Newton's law) might have "exceptions" on Solar System-scale, except possibly the Pioneer anomaly (for which there is a very plausible candidate explanation) and similar. When I read "errors" I hoped you meant measurement uncertainties, but I can't make sense of the rest of the paragraph assuming you did.