Mapping is a feature in DSers that helps you connect AliExpress suppliers to your products to place orders to AliExpress successfully.
However, you may encounter a situation where you cannot do mapping for your products in DSers. It is likely that you turned off the "Manage pricing and inventory for variants" button when editing your product in your Wix dashboard.
To fix the issue, just go to Wix and turn on the “Manage pricing and inventory for variants”button in your targeted product detail page. Remember to click on Save!
After that, go back to DSers and you will be allowed to do mapping for your Wix product.