# Card Supplementary Data
Merchants and partners can add Level 2 and 3 data to payments to reduce risk and payment processing costs. For more information about processing payments, see checkout or multiparty checkout.
## Structure
`CardSupplementaryData`
## Fields
| Name | Type | Tags | Description | Getter | Setter |
| --- | --- | --- | --- | --- | --- |
| `level2` | [`?Level2CardProcessingData`](../../doc/models/level-2-card-processing-data.md) | Optional | The level 2 card processing data collections. If your merchant account has been configured for Level 2 processing this field will be passed to the processor on your behalf. Please contact your PayPal Technical Account Manager to define level 2 data for your business. | getLevel2(): ?Level2CardProcessingData | setLevel2(?Level2CardProcessingData level2): void |
| `level3` | [`?Level3CardProcessingData`](../../doc/models/level-3-card-processing-data.md) | Optional | The level 3 card processing data collections, If your merchant account has been configured for Level 3 processing this field will be passed to the processor on your behalf. Please contact your PayPal Technical Account Manager to define level 3 data for your business. | getLevel3(): ?Level3CardProcessingData | setLevel3(?Level3CardProcessingData level3): void |
## Example (as JSON)
```json
{
"level_2": {
"invoice_id": "invoice_id4",
"tax_total": {
"currency_code": "currency_code4",
"value": "value0"
}
},
"level_3": {
"shipping_amount": {
"currency_code": "currency_code0",
"value": "value6"
},
"duty_amount": {
"currency_code": "currency_code6",
"value": "value2"
},
"discount_amount": {
"currency_code": "currency_code2",
"value": "value8"
},
"shipping_address": {
"address_line_1": "address_line_10",
"address_line_2": "address_line_20",
"admin_area_2": "admin_area_24",
"admin_area_1": "admin_area_16",
"postal_code": "postal_code2",
"country_code": "country_code0"
},
"ships_from_postal_code": "ships_from_postal_code4"
}
}
```