An unsuccessful enrollment may be due to an administrative error, such as failure to provide complete information on the EVUS form. For assistance, please see the CBP informational website at www.cbp.gov/evus or call the EVUS Call Center at 00-1-202-325-0180. The Call Center is available 24 hours per day, 7 days per week, but is closed on U.S. federal holidays. The Call Center is staffed with Mandarin speakers. You may also contact the Call Center by email at firstname.lastname@example.org. The Call Center is available to answer questions travelers might have regarding EVUS, but all EVUS enrollments must be submitted online by the traveler or a third party. U.S. Embassies and Consulates are not able to provide details about EVUS enrollments or resolve the issue that caused an unsuccessful enrollment.