Please note this is a channel-specific article only applicable to Magento.


The following error message is returned during Magento listing creation: "The value of attribute "Color" must be unique".


Attribute "color" was not configured correctly in Magento backend.


  • 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.