The above-mentioned error message appears when an attempt is made to link a feature of an article, while that feature is not included as a feature (Header) for the article in the database.
This may also be because the feature was written incorrectly in the import file. Pay attention to spaces and capital letters when writing.
Solution:
Make sure that the characteristics listed in the import file are actually recorded with the article in the database and make the spelling exactly the same.
