OptionalbrandLowercase card brand ("visa", "mastercard", "amex", …) when known.
OptionalexpCard expiry month (1-12), when the PSP reports it — display/renewal warnings only.
OptionalexpCard expiry year (4 digits), when the PSP reports it.
Optionallast4Last 4 digits of the card / account, when the PSP reports them.
OptionalwalletWallet that wrapped the card ("apple_pay", "google_pay", "link", …).
Normalized display facts about the instrument used — what receipts and order pages show ("Visa •••• 4242"). Never enough data to charge with.