Unable to turn off publishers on whitelist campaigns VIA api

Hi, I make the following call:
curl --location --request PATCH 'https://backstage.taboola.com/backstage/api/1.0/{account_id}/campaigns/{campaign_id}/'
--header 'Authorization: Bearer {token}'
--header 'Content-Type: application/json'
--data-raw '{
"patch_operation": "REMOVE",
"publisher_targeting": {
"publishers": [
"ndtv-newsapp-ios"
]
}
}'

I get the following response:
{"http_status":400,"message":"publisher ndtv-newsapp-ios not exists in campaign targeting","offending_field":"publisher_targeting.publishers","message_code":"api.action.bad_request.publisher_targeting.publishers"}

is there a way to activate and deactivate publishers that are part of a whitelist campaign via the API?
thanks