If you get this error, it means that the postcode you submitted is not correct or does not match the postcode format of the country or location. Please edit the postcode to follow the correct format of the location and resubmit your order. When it's required for online forms for countries without postcodes, please use 0000 or 00000 (e.g. Bahrain does not use zip or postal codes, but the postcode field cannot be empty).
You can read more on how to update the address for an order in our article How do I change a shipping address for an order?