Please note this is a channel-specific article only applicable to Magento.
Problem
The following error message is returned during Magento listing creation: "The value of attribute "Color" must be unique".
Cause
Attribute "color" was not configured correctly in Magento backend.
Solution
- Login to Magento Admin;
- Go to Catalog > Attributes > Manage Attributes;
- Click on the Color attribute;
- Select No in the Unique Value drop-down menu;
- Click on Save Attribute button.