Unfortunately, there really is no next step--the courts will not throw out a case (whether criminal or civil) because of what is likely a typo or other similar minor, non-substantive error. If this error is pointed out to the court or the other side--which you will have to do to try to challenge it--they will have the opportunity to amend one or another document to correct the simple error.Should it turn out that prosecution witnessses do in fact disagree about core elements or facts, it may at that point be possible to have the case thrown out--or at minimum, their confusion and disagreement will provide good grounds for cross-examination and damaging their credibility. But that is very likely not the case; this is most likely a mere "editorial error," and those will not result in the case being dismissed, but rather in a chance to correct the error.