My first live trade attempt. I get error Use Polygon market data. BB.US not found.

BB is traded on the NYSE so I don't understand.

Alpaca support says it is a Zorro issue.

I have Zorro S and attempted multiple times to use Zorro support. I was given information that was invalid and caused an error; an explanation of what an error message is when I confront support with their bogus reply; referrals to the manual; ridicule and abuse for my lack of knowledge of Lite C. Hence I am not going to submit a Zorro support request.

Does anyone use Alpaca with Zorro?

I give up on Zorro. It is unusable with Alpaca for trading, and I want to use Alpaca. There is essentially no support. Moving back to Python.

The Alpaca plugin was supplied by one of the users of this forum.

It seems that there are some special instructions regarding setting up market data:
https://github.com/kzhdev/alpaca_zorro_plugin