Item attributes of the transaction.

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

| Fields ||
|---|---|
| ## `country_code` | `string` Common Locale Data Repository (CLDR) territory code of the country associated with the feed where your items are uploaded. See <https://developers.google.com/google-ads/api/reference/data/codes-formats#country-codes> for more information. This information is useful to differentiate product information in cases where a product (identified by item_id) is associated with multiple countries. |
| ## `item_id` | `string` A unique identifier of a product. It must be the exact same Merchant Center Item ID you use in your Google Merchant Center for this product. Required. |
| ## `language_code` | `string` ISO 639-1 code of the language associated with the feed where your items are uploaded. This information is useful to differentiate product information in cases where a product (identified by item_id) is associated with multiple languages. |
| ## `merchant_id` | `int64` ID of the Merchant Center Account. Required. |
| ## `quantity` | `int64` The number of items sold. Defaults to 1 if not set. |