The first name of the cardholder. This will be printed on credit cards as the cardholder. It is important to note, that only the following characters are allowed for issuing cards: A-Z, a-z, 0-9, äöüÄÖÜ.- The combined length of first name and last name must not exceed 24 characters. One additional character is reserved for the space inserted between them when displayed on the card (25 characters in total). The full legal first name must be provided, since it is used for sanctions screening. Initial-only values are rejected: a single letter (e.g. K), a single letter followed by a period (e.g. K.) and sequences of initials with or without periods (e.g. J R, J. R.). Short names with two or more letters (e.g. Li, Ng, Wu, Xu) are valid. A violation results in a 400 Bad Request with the error code INCOMPLETE_LEGAL_NAME.