This is a server-side error on the Vietnam Immigration Department portal - not a problem with your application or documents. It occurs most frequently during peak traffic periods (Vietnamese public holidays, Tet period, school holiday travel peaks), after portal updates, or during scheduled maintenance windows. Your application has not been submitted and no payment has been taken.

Slightly different from a generic system error, this message typically indicates the portal has accepted your form input but cannot complete the submission due to queue overload or a temporary processing lock. Most common during the morning rush hours in Vietnam (8am to 10am GMT+7) when government systems experience peak load. Your payment may or may not have been captured - check your bank immediately.

The passport number field on the Vietnam eVisa portal accepts only alphanumeric characters with no spaces, dashes, or special characters. This error fires when: the number contains a space (e.g. "AB 1234567" instead of "AB1234567"), a dash is included, a letter is misread as a number (common with O/0 and I/1 confusion), or the number of digits does not match the expected format for your nationality.

This is one of the most common errors on the Vietnam eVisa portal. The system uses automated photo validation and will reject images that fail on any of several technical criteria. The error message does not specify which criterion failed - it simply rejects the photo.

Payment errors on the Vietnam eVisa portal are common and often stem from the portal payment gateway rather than your card. Causes include: international transaction blocking by your bank, card security systems flagging the Vietnam government payment processor as unfamiliar, browser security extensions blocking the payment redirect, or a genuine card issue. In some cases your bank logs a pending charge even when the portal shows a failure - this can result in being charged without receiving a confirmation.

This error appears when: the intended entry date you entered is today or earlier (past date), the entry date is more than 90 days in the future from the application date, or the date format was entered incorrectly (day/month/year vs month/day/year). It also appears on rejection notices when an approved eVisa has expired and the traveller attempts to enter after the validity window.

This error or rejection reason means the name you entered on the application does not exactly match the name printed in the machine-readable zone (MRZ) of your passport. Common causes: middle names omitted or added incorrectly, hyphenated names entered without hyphens or with spaces instead, names with accents or special characters entered differently, and first/last name fields swapped. Even a single letter difference causes this error.

Vietnam requires all foreign passport holders to have at least 6 months of passport validity remaining from the intended date of entry into Vietnam - not from today. If your passport expires within 6 months of your arrival date, this error will appear and your application cannot proceed regardless of how far in the future your travel date is.

This is the rejection notice received by email after the Vietnam Immigration Department has reviewed and declined your application. The phrase "application error" is a catch-all term used on rejection notices and does not identify the specific problem. Common underlying causes: name mismatch with passport, non-compliant photo after human review, passport validity issue, incorrect date of birth, already-passed entry date, or a previous rejection on record for the same passport.

This error appears when the system detects an active or recently submitted application for the same passport number. Most commonly triggered when a traveller hits a payment error and resubmits, not realising the first application went through. It also appears when a traveller submits multiple times in quick succession after a page error, or when applying for a new eVisa while an old one is still in the valid period.