URL '{0}' is being used with a distinctive description at multiple locations within the file.
Explanation:
For each asset, such as a URL, a description is maintained so that the asset with the correct description can be displayed. This means that an asset can only have one description, which means that the same description must be given for each article where the asset is mentioned. If different descriptions are mentioned, this error message will occur.
Solution:
Find all articles in the import file where the URL is mentioned and place one and the same description next to the URL.