# ResponseHeader

- [JSON representation](https://developers.google.com/pay/refundable-one-time-payment-code-v2/payment-integrator-refundable-one-time-payment-code-api/ResponseHeader#SCHEMA_REPRESENTATION)

Header object that is defined on all responses sent from the server.

| JSON representation |
|---|
| ``` { "responseTimestamp": { object (`https://developers.google.com/pay/refundable-one-time-payment-code-v2/payment-integrator-refundable-one-time-payment-code-api/Timestamp`) } } ``` |

| Fields ||
|---|---|
| `responseTimestamp` | ``object (`https://developers.google.com/pay/refundable-one-time-payment-code-v2/payment-integrator-refundable-one-time-payment-code-api/Timestamp`)`` **REQUIRED**: Timestamp of this response. The receiver must verify that this timestamp is ± 60s of 'now', and reject the response if it is not. |