context: A state's consent may be invalidated if there was an erroneous understanding of a fact or situation at the time of conclusion, which formed the "essential basis" of the state's consent. Consent will not be invalidated if the misunderstanding was due to the state's own conduct, or if the truth should have been evident.
question: ఒక ఒప్పందం స్పష్టంగా కనిపించినట్లయితే, అది చెల్లనిదిగా ఉండదా?
answers: the truth