We bring the product listings from a channel, by syncing the product catalog from the sale channels. This is visible on the channel configuration page.
The system process runs every 24 hours at 0000 hours. However, you can trigger it manually on the channel details page.
Another way of defining products in our system is by importing a CSV file containing the product details. On the Listings page, click the import icon
Choose a CSV file to be uploaded.
To know the template, download it, update and upload this file.