What if I receive an error message? Scarlett October 22, 2025 01:11 Updated Should you receive an error message, it is likely that the promo code you’ve added is: An invalid code (i.e. the code does not exist) Fully redeemed Expired Related articles Why am I getting an invalid error message when I’m trying to book a car? In the event of a cancelled booking or failed payment, will I get back my promo code? What is a promo code wallet? Can I add new codes to the wallet? Why am I not able to make a booking? How do I change/add my credit/debit card?