| Name | Type | Description | Notes |
|---|---|---|---|
| amount | string | Amount of the operation in number format. 1.00 EURO = 100, 4.50 EUROS = 450... | [optional] |
| order | string | Reference of the operation. | [optional] |
| currency | string | Currency of the transaction. | [optional] |
| auth_code | string | Authorization bank code of the transaction (required to execute a return). | [optional] |
| card_country | string | Country of the issuer of the card in ISO3 Code (ex.: 724 = Spain). May be left empty. | [optional] |
| challenge_url | string | [optional] |