Metadata for Store Sales Direct.

[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 ||
|---|---|
| ## `custom_key` | `string` Name of the store sales custom variable key. A predefined key that can be applied to the transaction and then later used for custom segmentation in reporting. Accessible only to customers on the allow-list. |
| ## `loyalty_fraction` | `double` This is the fraction of all transactions that are identifiable (for example, associated with any form of customer information). Required. The fraction needs to be between 0 and 1 (excluding 0). |
| ## `third_party_metadata` | `https://developers.google.com/google-ads/api/reference/rpc/v25/StoreSalesThirdPartyMetadata` Metadata for a third party Store Sales upload. |
| ## `transaction_upload_fraction` | `double` This is the ratio of sales being uploaded compared to the overall sales that can be associated with a customer. Required. The fraction needs to be between 0 and 1 (excluding 0). For example, if you upload half the sales that you are able to associate with a customer, this would be 0.5. |