How do I correctly fill out the Vietnam e-visa/visa-exemption application form (visa type, visa number field) before flying to Nha Trang?

For 'purpose of visit' select tourism, and for 'visa type' choose 'Unilateral Visa Exemption' if your nationality qualifies for the up-to-45-day visa-free entry. If the system rejects this option, you don't qualify and need to apply for a regular e-visa instead.

The 'bilateral' option in the form is only for travelers who already hold visa status under a specific intergovernmental agreement — most tourists don't qualify and the system will reject this choice.

The 'visa number' field and its related dates only need to be filled in if you already had a previously issued visa (renewal/reissue case). For a first-time e-visa or exemption application, leave this field blank.

A separate application form must be filled out for each traveler, including children — you cannot combine a family into one application. Each person needs their own passport scan and photo uploaded individually.