Once you select a Category and a Product Type, you can continue with Specifics. The set of Specifics depends on the Amazon Category so it’s important to choose the category that matches your product characteristics best.

The Classification Data section will be auto-filled based on the selected Category and Product Type. Still, you need to complete Specifics under the Variation Data manually depending on your product variations.

Click Add Specifics button to search for the Specifics.

Use Only Desired filter so M2E Pro shows only advised Amazon specifics but not required.

Select one or several Specifics that describes your product and click Confirm.

Now you can proceed with setting up the Specifics values.

To set the values of the Specifics use Recommended Values, Custom Value or Custom Attribute.

To add Specifics into a particular group click +icon.

If you don’t know which group your Specific is located in, click Add Specifics button at the top of the page.

For some Specifics, it's possible to set several different values.

If you're going to use the Description Policy to create a new Amazon Parent-Child Product based on Magento Product, some values of Specifics can be automatically overwritten in the future.

In other words, if you select a particular value for Specific "Color" and use this Description Policy to create a new Amazon Parent-Child Product that varies by "Color" attribute, this value will be automatically overwritten with corresponding values of Amazon Child Products.