Insufficient attribute data to create a parent/child relationship for parent SKU [%s] and child SKU [%s]. For help with this error, see http://sellercentral-europe.amazon.com/gp/help/23821
This error occurs when you do not provide enough product data to properly create a variation (parent/child) relationship between products. To create a variation relationship, you must provide a VariationTheme value for both the parent product and the child product. For each child product, you must also provide the variation data that corresponds to the VariationTheme you indicated.
For example, if you designate a VariationTheme value of SizeColor for your parent product and child products, you must also provide a specific size and color for each child product.
To resolve this error using tab-delimited inventory files, enter data in the columns that correspond to your VariationTheme.
To resolve this error using a product data feed (XML), provide values for the elements that correspond to your VariationTheme.
For more information about creating parent/child relationships, please see Creating Parent/Child Variation Relationships.