Asset category cannot be modified, invalid category...

Error:

The assetcategory can not be modified because '{0}' is not a valid assetcategory.

Explanation:

When the assets are imported, only fixed values can be entered for the Asset category. The valid values depend on the type of asset.

If this error message occurs, an invalid category has been used.

Solution:

Make sure that in the Asset category column there are only valid values in the import file.