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CHECK DATE OF BIRTH

A practical guide for travel agents on fixing the Date of Birth format error in Amadeus — the correct DDMMMYY structure and the mistakes that trigger the rejection.

The Date of Birth format error is a small but persistent Amadeus PNR error that appears when an agent tries to enter a passenger’s date of birth and the system rejects the entry. The problem is almost never the date itself — it is how the date was typed. Amadeus requires a strict date structure, and any deviation from that structure triggers the error immediately. This article explains the exact format Amadeus expects, shows a working example, and lists the common typing mistakes that cause the rejection so you can fix it in seconds.

Why the Date of Birth Entry Is Rejected

This error appears when the agent tries to enter a Date of Birth for a passenger, but the system rejects it.

The reason: the Date of Birth was entered in an incorrect format. The Amadeus system requires a specific date structure, and any deviation will trigger this error.

Amadeus does not guess or auto-correct the date. If the structure does not match exactly, the entry is blocked — even if the date itself is completely valid.

The Correct Date of Birth Format

Enter the Date of Birth using the correct format:

DDMMMYY

DD = Day (two digits, e.g., 15)
MMM = Month (three-letter abbreviation, e.g., JAN, FEB, MAR)
YY = Year (two digits, e.g., 90 for 1990)

Working Example

If the passenger was born on 15 January 1990, enter:

15JAN90

Make sure there are no spaces and no special characters between the day, month, and year. The three parts must run together as one continuous string.

Common Mistakes That Trigger the Error

Writing the month in full — 15JANUARY90 instead of 15JAN90.
Using numbers for the month — 15/01/90 or 15-01-90.
Using a single digit for the day — 5JAN90 instead of 05JAN90.
Using a four-digit year — 15JAN1990.
Adding spaces between the parts — 15 JAN 90.
Adding slashes, dots, or dashes as separators.

Quick Fix Checklist

Confirm the error appeared on a Date of Birth entry.
Write the day as two digits (add a leading zero if needed).
Write the month as a three-letter abbreviation in capitals.
Write the year as two digits only.
Remove all spaces, slashes, dots, and dashes.
Re-enter the date in the DDMMMYY format.
Confirm the entry was accepted by the system.

Frequently Asked Questions

What is the correct Date of Birth format in Amadeus?

The correct format is DDMMMYY — for example, 15JAN90.

Can I write the month in full?

No. The month must be a three-letter abbreviation in capitals, such as JAN, FEB, or MAR.

Can I use slashes or dashes?

No. Spaces and special characters are not allowed. The day, month, and year must run together with no separators.

Conclusion

The Date of Birth format error is one of the easiest Amadeus errors to fix once you know the rule. Amadeus accepts only one structure: DDMMMYY, with two digits for the day, a three-letter month abbreviation, and two digits for the year — all joined together with no spaces or special characters. Enter 15JAN90 and the entry is accepted; enter 15/01/1990 and it is rejected. Memorising this format prevents the error entirely and keeps your passenger data entry fast and accurate.

🏷 Tags: amadeus Amadeus errors