The HTTP Response Code 200 wasn't received / The Image URL is invalid

If you received one of these errors, you've probably provided an HTTPS-based image URL. Walmart Product Content Policy recommends using an HTTP URL for images.

As a solution, you can navigate Walmart > Configuration > General > Advanced (M2E Pro v6.5.5 and higher for Magento v1.x) or Walmart > Configuration > Settings > Main Tab > Advanced section (Magento v2.x) and configure automatic URL replacement. Choose Replace with HTTP option and click Save. After this, all image URLs will be automatically replaced to HTTP-based URLs.

If you’ve configured the settings and the error still appears, please make sure to turn off the HTTPS URL redirect on your web server.

Please let us know if you find this information inaccurate