ai-keys-discount - message keys to en translation catalogue (6 entries)

key: payment.expiryMonth
en: Expiration month

key: payment.expiryYear
en: Expiration year

key: payment.cardno
en: Credit card number

key: payment.cvv
en: Verification number

key: payment.expiry
en: Expiration

key: payment.creditcardlabel
en: Credit Card
