I'm developing a sales channel app and I have some questions:
1. If a product can't be published to the sale channel, where should I save the errors that occured, so I can later display them to the shop owner? I was thinking of using the 'privatemetafields' but as far as I understand I can't filter the products by privatemetafields.
2. So how can I select a list with all the products(with their errors/warnings) that were not published?