Any product that you list on Walmart must be associated with a relevant Category in Walmart catalog.
In M2E Pro Category Policy, you can select Walmart Category/Subcategory that suits best your product and defines the Specifics. To set up Category Policy, navigate to Walmart > Configuration > Policies, click Add Policy,select Category, thencomplete the following steps:
Step 1: Specify a Policy title
Enter a meaningful title for your internal use:
Step 2: Select Walmart marketplace and category
Select Walmart marketplace to upload the related category list:
Category Policy is created per marketplace and cannot be changed after the Policy is assigned to a Listing Product.
To select the category, click Edit. In the opened pop-up, search for the needed category and Confirm your choice.
Item Specifics vary by Category/Subcategory. It is important to select the correct category to define the relevant Specifics.
Step 3: Complete Item Specifics
After you select the category, the Specifics section will appear:
By clicking Add Specifics, you will see a pop-up where you can select the specifics. If you need to narrow down the list of the specifics, you may use the search and filter tools. After you make a selection, click Confirm.
To define a Specific, you can use a custom value or select the relevant Magento Attribute.
You need to create an individual Category Policy for each Walmart Category you will use. Also, make sure to assign your products to a Category Policy before listing them on Walmart.
Find some Walmart tips on how to select the best category for a product here.