What should I do if I don't remember my visa information?

When filling out the Visa Application(Submit the Passport) section on the Foreign Professionals Online Application Platform, the fields found under “Have you ever been issued an ROC Visa?” are not mandatory to fill in, including such information as the visa-issuing office, the last application date, and the visa number. Similarly, the start and end dates of any previous employment under “Have you ever worked in Taiwan” are also not mandatory to fill in.