**NIE Approval Mail Mistake from consulate (Spelling Mistake in surname)**

I’d received NIE approval from Chennai consulate after 6 weeks. In the approval mail they misspelled the surname but passport number is mentioned rightly. I’d notified to consulate 5 days before but haven’t received any feedback yet.

Anyone knows how this NIE worked as email says

" THIS CORRESPONDENCE IS FOR INFORMATIONAL PURPOSES ONLY. IT IS NOT REQUIRED FOR AIRLINE BOARDING DETERMINATIONS.

Should I consider this as typo & expect the CBP data base is updated correctly or wait for Chennai consulate to reply and make the amendment.