You can export Part Terminology ID, BrandID and PartNumber to setup your product on Walmart.
To do this, follow below steps.
Click on "More Features" menu and click on "Downloads" menu.
In Download page go to Walmart tab and click on download link like below:
It will download all the Part Number , Part Terminology ID and BrandID in an excel. So you can use it in the product setup on the Walmart.