Thanking a member

HIPOVALIANT said
Leave feedback as follows:

1. Click on "User Name"
2. Click "View Public Profile"
3. Click "Feedback Score"
4. Click "View Complete Feedbacks"
5. Click "Submit Feedback"

Fill out form and send.

Easy and simple to do.

I'm having trouble with this. I have all the fields filled out correctly but I keep getting an error.

The following errors occurred with your submission:
There was an error in your deal details!

I don't get it.