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# CustomerCountry

Matches transactions whose customer billing country is (or is not) in a configured list. Shown as "Customer billing country" in the condition catalogue.

## Parameters

| Field        | Type             | Required | Allowed values                                                          |
| ------------ | ---------------- | -------- | ----------------------------------------------------------------------- |
| `countries`  | array of strings | yes      | One or more ISO 3166-1 alpha-2 country codes, e.g. `["DE", "AT", "CH"]` |
| `comparator` | string           | yes      | `"in"` or `"notin"`                                                     |

## Example

```json
{
  "constraint": "CustomerCountry",
  "params": {
    "countries": ["DE", "AT", "CH"],
    "comparator": "in"
  }
}
```

## Notes

* Country codes must be uppercase ISO 3166-1 alpha-2.
* The Provisioning API requires the modern multi-country shape shown above. The legacy single-country shape (`{"country": "DE"}`) is no longer accepted via this endpoint — and a payload that mixes both `country` and `countries` is rejected outright.
* If the transaction has no customer attached, the rule is skipped and routing falls through to the default connector.
* Included in every platform package.
* Also available in multi-method routing documents.