# China (CNY) Transaction Data Requirements

The following transaction-level fields apply to all CNY payments to China, regardless of the underlying payment rail (CNAPS, CUP, SIB/IBPS, or NUCC).

For a list of supported bank codes required to route payments to Chinese financial institutions, see [China bank codes](/products/payments-direct-2/api-docs/integration-resources/apac/cn/china-bank-codes).

| Field  | Description  | Required | Type | Constraints  |
|  --- | --- | --- | --- | --- |
| `purposeCode` | Purpose of payment | Required | ENUM | See [valid values](#purpose-of-payment-codes) below |


Invoice document requirement (UI only)
CNY payments made through the Payments Direct UI require an invoice document to be uploaded before the payment can be submitted. This requirement applies to UI customers only and is not part of the API payment request.

## Purpose of payment codes

| Code | Description |
|  --- | --- |
| `FAMI` | Family support |
| `GDDS` | Purchase or sale of goods |
| `SALA` | Salary payment |
| `SCVE` | Purchase or sale of services |