These are the four valid combinations of fields that make up a card payment type. Both reusable/save flags default to FALSE, so setting the field to "false" or leaving it blank are equivalent:
| card-identifier | session-key | reusable | save | notes |
|---|---|---|---|---|
| first-use string | string | FALSE | TRUE | Card tokenised on the front end; saved as reusable after transaction. |
| first-use string | string | FALSE | FALSE | Card tokenised on the front end; not reusable after transaction. |
| second-use string | n/a | TRUE | FALSE | Reusing a saved card; no CVV checks. |
| second-use string | string | TRUE | FALSE | Reusing a saved card; with CVV checks. |
The first-use string is the card identifier used for the first time. second-use is the same card identifier stored and used again.