Unknown exchange
An exchange MIC in the request does not match any exchange OHLC serves.
"type": "https://ohlc.io/problems/exchange-not-found"
Why it happens
- A MIC that is not a covered U.S. venue, or a typo such as
NASDAQinstead ofXNAS.
How to fix it
- List exchanges and their MICs with `GET /v1/exchanges`.