# ResponseHeader - Source proto: `rb/api/header.proto` Common header for response requests and responses. Standard response header | Field | Type | Label | Description | | ----- | ---- | ----- | ----------- | | request_header | [RequestHeader](requestheader.md#rb-api-requestheader) | | Echo | | request_received_timestamp | [google.protobuf.Timestamp](https://protobuf.dev/reference/protobuf/google.protobuf/#timestamp) | | Robot clock | | response_timestamp | [google.protobuf.Timestamp](https://protobuf.dev/reference/protobuf/google.protobuf/#timestamp) | | Robot clock | | error | [CommonError](commonerror.md#rb-api-commonerror) | | If set, there is error |