Enum describing the availability of a product offer.

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

| Enums ||
|---|---|
| ## `MULTI_CHANNEL` | The item is matched to its online or local stores counterpart, indicating it is available for purchase in both ShoppingProductChannels. |
| ## `SINGLE_CHANNEL` | The item is sold through one channel only, either local stores or online as indicated by its ProductChannel. |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |