What is the channel verification step?

After pushing assets:

1. Click Next: [Channel] in the left menu (for example Next: Facebook).
   
   
2. For each channel you see:
   
   
   • The campaign with its settings.
     
     
   • Its ad sets/ad groups.
     
     
   • The ads attached to each ad set/ad group.
     
     
3. Any missing or invalid settings are shown as warning triangles and messages.
   
   

You can:

• Click the edit icon next to a campaign/ad set/ad/ad group.
  
  
• Fix settings directly in the slide-out (no need to go back through the wizard).
  
  
• Save and repeat until all warnings are cleared.
  
  

When a channel is fully valid, it gets a green checkmark in the left menu.