Try entering the full symbol string into the symbol name. Typically we would break out the exchange and asset type, but for IQFeed, we pass along the full symbol name untouched.
I'm receiving an "Error retrieving bars: !ERROR! Invalid symbol" error when downloading historical forex data for specific symbols. I've verified the data is being transmitted via the IQFeed Diagnostics Utility. The symbols have the following settings for daily data:
Asset Type: Forex
Construct Bars From: Default
Asset Currency: varies based on symbol
For example, USDCAD works but USDRUB throws the error.
Any thoughts on how to resolve?