For online/web users:
Log into your Western Union online account. Go to Settings → Profile. Fill in every field: u0407 western union code
Verified profiles are far less likely to trigger U0407. For online/web users: Log into your Western Union
If you are staring at the U0407 error right now, do not panic. Most cases are resolved within 24 to 72 hours. Follow this exact process: Verified profiles are far less likely to trigger U0407