The route itself is fine, the first and last points however are invalid. I have flown both to Hamburg and Trondheim in the past don’t remember what the SID and STAR route points were but apparently these are invalid (errors are shown at the bottom):
Don’t look at the forbidden route error, I haven’t specified PBN in the editor.
Edit: Seems like the route should start from EKERN. You should at some point take one airway further east (Z320), terminating at point VEVOD or file a direct to connect with the STAR at Trondheim. Illustrating that just selecting some points in Skyvector which are more or less on the route won’t cut it in the real world.
The following would be a valid route for real world navigation:
EKERN M852 ALS P615 NEDZA P601 VEXOM DCT VEVOD
