You may encounter the error "credentials could not be validated" if you have configured your Magento store to be WS-I Compliant. Turning off WS-I Compliance usually corrects this error.
This article explains how to:
The easiest way to determine if your store is configured for WS-I Compliance is to hit your store url:
If WS-I Compliance is enabled then you'll see:
If the user is correctly configured (no WS-I) should see something like:
This error can be fixed by turning off WS-I Compliance on your Magento server.
- Login to your Magento Admin Panel.
- Click System and go to Configuration.
- On the left hand navigation menu, expand the Services menu and click Magento Core API.
- Change WS-I Compliance to No.
- Click Save Config.
That should fix the "Credentials could not be validated" error and allow ShippingEasy to connect to your Magento server correctly.