The shopping loyalty related data. Shopping utilizes this data to provide users with a better experience. Accessible only to merchants on the allow-list.

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

| Fields ||
|---|---|
| ## `loyalty_tier` | `string` The membership tier. It is a free-form string as each merchant may have their own loyalty system. For example, it could be a number from 1 to 10, or a string such as "Golden" or "Silver", or even empty string "". |