salesChannel is not get assigned

Hi. Im trying to add product using /api/v3/product. Problem is salesChannel is not get assigned. There is no such parameter for the end point and i cant find it anywhere in documentation. I tried adding it like this: ‘salesChannels’: [{‘id’: sales_channel.shopware_id}], but it’s not works. Can someone help me with this ?

Also does not works with /api/v2/_action/sync