What to do if you made a mistake on your TDAC

Before you submit the form

If the form has not yet been submitted, correcting a mistake is straightforward. The platform usually allows the traveller to navigate back to previous steps and edit any field. Useful habits include:

• Reading the entire summary screen carefully before pressing submit.
• Comparing each field to the passport and booking documents.
• Watching for autocorrect changes on mobile devices, especially in name fields.

After you have submitted the form

Once the TDAC has been submitted, the options depend on the nature of the mistake. Typical scenarios include:

• Small typographical errors that do not change the meaning of the data.
• Wrong flight numbers due to schedule changes.
• Incorrect accommodation details because the booking changed.
• More significant errors in passport number or date of birth.

For small, harmless errors, no specific action may be required, although submitting a corrected entry is usually safer if the platform allows it. For more significant errors, the traveller should follow the correction or resubmission procedure described on the official website.

Submitting a new TDAC

In many cases, the simplest fix is to complete a new TDAC with the correct information. When doing this, travellers should:

• Use the same passport and travel details as the original submission.
• Keep the most recent confirmation, since this is the one immigration officers will rely on.
• Ignore older, incorrect confirmations rather than discarding them only after arrival.

If you notice the mistake at the airport

If the error becomes apparent only after arriving at the immigration desk, the traveller should:

• Inform the officer politely and clearly about the issue.
• Show both the passport and any TDAC confirmation on hand.
• Follow the officer's instructions, which may include re-submitting the form on the spot.

Connectivity is usually available in the immigration hall, although it may be slower than at home. Carrying a charged phone helps.

Avoiding repeat mistakes

Travellers who use the TDAC frequently can reduce errors by:

• Keeping a personal text file with passport details for copy-paste.
• Saving past confirmations to compare entries between trips.
• Reviewing common pitfalls in the article on TDAC mistakes.

When professional advice may be useful

Most TDAC mistakes are administrative and do not require legal or professional advice. However, travellers whose situation is more complex — for example, those with long-stay visas, work permits or pending immigration matters — may prefer to consult their employer's mobility team or a qualified immigration adviser before resubmitting.