Tips on mismatched ticker names?

I just started submitting Signals predictions, and keep getting “Live Tickers 1969/5389” after submitting. Reviewing the submitted file and a freshly pulled universe file from

https://numerai-signals-public-data.s3-us-west-2.amazonaws.com/universe/latest.csv

I don’t see any differences in what I’m submitting, nor does the uniq command. I didn’t see anything obvious comparing to the example submission file either. How should I go about figuring out what is off?

Turns out my issue was in the header. I had ticker instead of numerai_ticker like the example code. Changing to numerai_ticker gave me 100% live tickers matched.

The documentation on this should be clarified. It currently says the following which does not mention a numerai_ticker option nor explain whatever the semantic difference is.

A cusip, sedol, or ticker column - values must be valid tickers associated with the ticker type in the header.

https://docs.numer.ai/numerai-signals/signals-overview#submissions