Here are some reasons why need to map a product with orders.
1. Product/Variant is out of stock/deleted from supplier.
2. Supplier does not support shipping to the delivery address/shipping country.
3. Product must map an AliExpress / Topdser product link to be able to order if it's sync with Topdser the first time.
Please find “All Shopify orders” one the left side of toolbar and click it. The order would be shown like that.
Then, please click “mapping “, it will jump to the mapping page. Fill in the new supplier link and click “import “. There are two ways to mapping products.
At last, do not forget to click “save “. It is done!
Now you can place the order !