I'm filing 1-90 and I already attended my biometrics appointment. I received a second appointment notice, Do I still have to go?

Call the National Customer Service Center at 1-800-375-5283 to confirm.

As stated by USCIS, if you have already attended an Application Support Center for your biometric appointment, and received a second appointment notice for the same application type, please call the National Customer Service Center at 1-800-375-5283 to confirm that you do not need to return to the Application Support Center to have biometrics collected again. CITATION; http://www.uscis.gov/news/alerts/some-biometric-appointment-notices-issued-error