When you use a WooCommerce custom field to insert product attributes data and want to show it as an attribute in your feed, you can do it easily with the Product Feed Manager for WooCommerce plugin.
In this guide, I will show you how you can use a custom field value in the product feed.
Follow the easy steps:
1. At first create a new feed >> select a merchant or open your existing feed.
2. Scroll down to the Feed Configuration section, and here you will find all the attributes as per your selected merchant.
3. Click on the Value dropdown field of the concerned attribute and scroll down to the Product Custom Attributes segment, and find your required value from the dropdown list.
4. Finally, go back to the top and click on the publish/ update button to publish/ update the feed.
Now when you open the feed, you will find that new value is added to your concerned attriute.