Incorrect Date of Birth on I-797B

I got my H1b approved few days ago and found that the date of birth is wrong in 1-797B. Initially I found the
date of birth is incorrect in 1129 but my Employer told he had put the supporting document for date of birth
correction while submitting the RFE; but not sure who’s mistake is this.

  • I need help to get this corrected before my visa interview; what are the steps that I need to take get this
    corrected?(I have no way to contact the Attorney who submitted my case with the USCIS)
  • Can I attend visa interview with the incorrect date of birth in 1-797B?