The recommendation to update a customer list that hasn't been updated in the last 90 days. The customer receiving the recommendation is not necessarily the owner account. The owner account should update the customer list.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v25/resources/recommendation.proto)

| Fields ||
|---|---|
| ## `days_since_last_refresh` | `int64` Output only. Days since last refresh. |
| ## `owner_account` | `https://developers.google.com/google-ads/api/reference/rpc/v25/Recommendation.AccountInfo` Output only. The owner account. This is the account that should update the customer list. |
| ## `targeting_accounts_count` | `int64` Output only. User lists can be shared with other accounts by the owner. targeting_accounts_count is the number of those accounts that can use it for targeting. |
| ## `top_spending_account[]` | `https://developers.google.com/google-ads/api/reference/rpc/v25/Recommendation.AccountInfo` Output only. The top spending account. |
| ## `user_list_id` | `int64` Output only. The user list ID. |
| ## `user_list_name` | `string` Output only. The name of the list. |