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What does the "invalid alphabet pattern" error on TDAC mean specifically regarding passport numbers?
May 3, 2025
a day ago
Rex ******
ORIGINAL POSTERTLDR : Answer Summary
Users are encountering "invalid alphabet pattern" errors while entering their passport numbers on the TDAC application. Common causes for this error include accidental spaces before or after the passport number and confusion between the letter 'O' and the number '0'. One user mentioned resolving a similar issue by deleting a trailing space when applying for the COVID Sandcastle visa. It's noted that separating letters and numbers with spaces can also lead to this error.
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