account | DynamicAccount | Yes | - | Select the DV360 advertiser that owns the channel. |
channel_id | string or SelectItem | Yes | - | ID of the channel to edit. |
add_sites | string or array of string | No | - | Site URLs or app IDs to add, as a list or newline-separated text (one per line; max 240 bytes each), e.g. ‘example.com’ or an app ID like ‘com.example.app’. |
remove_sites | string or array of string | No | - | Existing site URLs or app IDs to remove, as a list or newline-separated text. Removals are applied before additions. |