With the exact regex the official site enforces, the error message it returns, and what you probably did wrong. Pre-check your values in the e-Arrival page's local validator before pasting.
Use the passport number from the photo page. No spaces or punctuation.
^[A-Z0-9]{6,12}$
max 12Match the Latin passport spelling. Keep the order shown on the official form.
Use the flight number on your boarding pass. For land entry, use the border crossing details the official flow asks for.
Use the date you enter Cambodia. The e-Arrival flow is built around that arrival window.
Use an inbox you can access offline or at low connectivity. Save the QR after submission.
"Invalid passport number"Spaces, dashes, or MRZ text.
"Missing arrival QR"A visa receipt is not the same as the e-Arrival confirmation. Keep both if you need both.
"Email not received"Check spam, then re-open arrival.gov.kh and confirm the submission.
The official site shows a confirmation on screen. Screenshot it — that's your backup.
Within a few minutes from a gov.kh address, with the record details.
Show the e-Arrival QR code with your passport. If you applied for a visa in the same flow, keep that approval separate.
Screenshot is fine. PDF is fine. Even the email app open on your phone is fine.
Rare. Officer looks you up by passport number — your record is already in the system.
Use the official .gov.kh portal. If your flow also includes visa questions, keep the arrival declaration and visa result separate.
Type your details below. We never send them anywhere. This runs 100% in your browser. View source to verify.
File with the passport you will carry. Save the confirmation or QR before leaving the page.
If you still need coverage for the trip, these links support entrycardguide without changing the price you pay.
Affiliate disclosure: if you buy through one of these links, we may earn a commission. We never accept money from visa middlemen, form-filing services, or companies that compete with the official government forms we point to.