Hello, @Chintu2407
The Swiss Half Fare Card allows children aged 6 to 15 years to travel for free with a parent who has a valid card. Since your son is 10 years old, he should be eligible for the Swiss Family Card. The error you’re encountering might be due to a technical issue on the website or a mistake in the date format entry.
Here’s what you can do:
Double-check the date of birth format. It should typically be in the format DD.MM.YYYY.
If the format is correct and you still face the issue, try clearing your browser cache or using a different browser.
If the problem persists, it’s best to contact the customer service of the Swiss Travel System directly. They can assist you with the technical issue and ensure your son is added correctly.
I hope my suggestion is helpful for you.
Best Regard,
angela683h