Classification node is found at multiple levels

Error:

Classification node '{0}' is found at multiple levels

Explanation:

The own classification consists of a maximum of 4 layers.

When importing the own classification, all 4 layers must be filled in.

The level IDs may not be changed or moved.

If they are changed, this error message may appear.

Solution:

Create a new export of the own classification and make the changes therein without changing the Level-Id's.