Contains one session attribute of the conversion.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v26/services/conversion_upload_service.proto)

| Fields ||
|---|---|
| ## `session_attribute_key` | `string` Required. The name of the session attribute. |
| ## `session_attribute_value` | `string` Required. The value of the session attribute. |