Header object that is defined on all requests sent to the server.
| JSON representation | 
|---|
| { "requestId": string, "requestTimestamp": { object ( | 
| Fields | |
|---|---|
| requestId | 
 REQUIRED: Unique identifier of this request. This is a string that has a max length of 100 characters, and contains only the characters "a-z", "A-Z", "0-9", ":", "-", and "_". | 
| requestTimestamp | 
 REQUIRED: Timestamp of this request. The receiver must verify that this timestamp is ± 60s of 'now', and reject the request if it is not. This request timestamp is not idempotent upon retries. | 
| protocolVersion | 
 REQUIRED: The version of this request. | 
| paymentIntegratorAccountId | 
 REQUIRED: Identifies a unique account with contractual constraints. |