I have submitted feedback using the API a couple of times. I don't have my notes in front of me as those are at work. but I didn't experience any trouble. Just the normal eBay stuff. No auction id or the user had changed their user id.
I can't find the API error code 50 definition. What is weird is "we are currently unable to obtain "your" feedback rating." Today eBay has been throwing API errors all over the place. None were Aw2K issues.
Was the error returned for all feedback? Or just one Invoice/Invoice item? Or you could not even begin the feedback process because of the API error 50?
Be sure the Invoice/Invoice item in question has the correct Auction id. Did the buyer change their user id? Or is the buyer no longer a registered eBay member.
You might try submitting feedback later and see if it happens again. If it does, email Thom with the complete error message text. He'll probably want to see the feedbacklogfiles. so don't shut down AW2000 after submitting feedback if you receive the API error message again later on. That way you'll still have the feedback logfiles to send him.
I am so glad you joined us. I dearly LOVE being a lab rat.
Re: big problems with beta