> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/SessionAttributesKeyValuePairs).

Contains session attributes of the conversion, represented as key-value pairs.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/services/conversion_upload_service.proto)

| Fields ||
|---|---|
| ## `key_value_pairs[]` | `SessionAttributeKeyValuePair` Required. The session attributes for the conversion. |