The SGA15 error is a common technical issue encountered by applicants during the U.S. visa application process, particularly when attempting to schedule an appointment or access certain parts of the online system.
This error typically indicates a problem with the system's servers or a glitch in how the application data is being processed.
To resolve the SGA15 error, applicants are advised to first clear their browser's cache and cookies, try using a different browser or device, and ensure that all entered information is correct and up-to-date.
If the problem persists, contacting the technical support team for the U.S. visa application service is recommended, as they can provide further assistance and potentially reset the application process to overcome the error.