Noticed that my Mexican marriage certificate has an error.

I do not think that there would be a problem, especially if you are the beneficiary of the I-130 petition. If you are the petitioning US citizen and were born in the US, it would not make much difference who your parents are. The error would have more relevance if you immigrated to the US based on your relationship with your parents. I do not think that it would be disqualifying anyway, but it might require some explanation on your part. Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.