TikTok Shop provides a dedicated Promotion Tool in its back-office to set discounts and flash deals.
You may also join the Product Campaigns organized by TikTok Shop.
In Lengow, there are no specific attributes to set promotions on TikTok Shop.
However, you may modify the "price.amount" to reduce your selling price.
If you wish to plan a price reduction for specific dates, create a rule with a defined time period in Lengow.