# Greece (`GR`)

Use `GR_MYDATA` to preserve classification and authority/provider evidence
obtained through the merchant's myDATA flow.

## Before Cheqi

- Classify the document in the merchant's myDATA or provider integration.
- Complete the applicable submission and obtain the final MARK/UID and
authority/provider response.
- Obtain the final authentication evidence, submission timestamp, verification
URL, and QR payload.
- Generate the final Cheqi receipt only after the external operation succeeds.


## In the Cheqi request

| Value | Request location |
|  --- | --- |
| External regime | `jurisdictionalData.regime = GR_MYDATA` |
| Regime contract version | `jurisdictionalData.regimeVersion` |
| Classification | Field `GR:DOCUMENT_CLASSIFICATION` |
| MARK | Fiscal field `GR:MYDATA_MARK` |
| UID | Fiscal field `GR:MYDATA_UID` |
| Provider/device ID | `fiscalization.fiscalDeviceId` or `softwareId` |
| Authentication code | `fiscalization.verificationCode` |
| Authority reference | `fiscalization.authorityReference` |
| Submission timestamp | `fiscalization.timestamp` |
| Verification URL | `fiscalization.verificationUrl` |
| Authority QR | Top-level `barcodes[]` |


## Example payload fragment

```json
{
  "barcodes": [
    {
      "type": "QR_CODE",
      "data": "exact-mydata-verification-payload",
      "label": "myDATA verification"
    }
  ],
  "jurisdictionalData": {
    "countryCode": "GR",
    "regime": "GR_MYDATA",
    "regimeVersion": "2026-07",
    "fiscalization": {
      "system": "GR_MYDATA",
      "status": "FISCALIZED",
      "fiscalDeviceId": "GR-PROVIDER-01",
      "authorityReference": "GR-SUBMISSION-001",
      "verificationCode": "GR-AUTH-001",
      "verificationUrl": "https://authority.example/verify/opaque-reference",
      "timestamp": "2026-07-29T08:15:30Z",
      "additionalFields": [
        {
          "code": "GR:MYDATA_MARK",
          "value": "GR-MARK-001"
        },
        {
          "code": "GR:MYDATA_UID",
          "value": "GR-UID-001"
        }
      ]
    },
    "additionalFields": [
      {
        "code": "GR:DOCUMENT_CLASSIFICATION",
        "value": "RETAIL_SALE"
      }
    ]
  }
}
```

Cheqi does not classify transactions, submit to myDATA, obtain a MARK/UID, or
generate the authority QR.

## Related

- [Supplying jurisdiction data](/countries/jurisdictional-data)
- [Country support boundary](/countries/overview)