> [!CAUTION]
> **Caution:** This documentation is for Google Ads API **v23** . The latest active version is [**v26**](https://developers.google.com/google-ads/api/reference/rpc/latest/CriterionCategoryChannelAvailabilityModeEnum.CriterionCategoryChannelAvailabilityMode).

Enum containing the possible CriterionCategoryChannelAvailabilityMode.

[Proto definition ![GitHub](https://developers.google.com/site-assets/logo-github.svg)](https://github.com/googleapis/googleapis/blob/master/google/ads/googleads/v23/enums/criterion_category_channel_availability_mode.proto)

| Enums ||
|---|---|
| ## `ALL_CHANNELS` | The category is available to campaigns of all channel types and subtypes. |
| ## `CHANNEL_TYPE_AND_ALL_SUBTYPES` | The category is available to campaigns of a specific channel type, including all subtypes under it. |
| ## `CHANNEL_TYPE_AND_SUBSET_SUBTYPES` | The category is available to campaigns of a specific channel type and subtype(s). |
| ## `UNKNOWN` | Used for return value only. Represents value unknown in this version. |
| ## `UNSPECIFIED` | Not specified. |