Multiple feature indexes used within article group...

Error:

Multiple feature indexes for feature '{0}' are being used.

Explanation:

By means of the HeaderIndex1..X you can determine the order of the features (Header1..X). In order to do this correctly, the same index must be assigned to each feature within an article group. If different indexes are assigned to the same feature within the article group, this error message will be displayed.

Solution:

Make sure that each unique feature of an article (group) is assigned the same index.