Why are there fields visible in data item browser that are not accessible via Eikon Data AP?

I am running Eikon API Proxy on Mac, version 1.0.102. For many fields I can see values on the data item browser (for bonds) like CF_BID, or TRADE_DATE, but anytime I query for these fields using Eikon Data API in Python, they never get retrieved, only returning None values. Why am I unable to retrieve these programmatically?

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Accepted answers

Gurpreet

I just tried the data item browser for a random bond and could verify that only bond applicable fields had data in them.

All comments

Gurpreet

@javan.graham, You can filter the fields in data item browser, by typing in the RIC code for the item you are interested in, in which case only the applicable fields are shown.

These fields are relevant to equities and can be pulled for equity quotes like:

>>> df, err = ek.get_data(['GOOG.O','MSFT.O', 'FB.O'], ['CF_LAST', 'CF_BID', 'TRADE_DATE'])
>>> df
  Instrument    CF_LAST   CF_BID  TRADE_DATE
0     GOOG.O  1228.8400  1228.60  2019-07-30
1     MSFT.O   140.8435   140.84  2019-07-30
2       FB.O   196.4850   196.47  2019-07-30

Gurpreet

I just tried the data item browser for a random bond and could verify that only bond applicable fields had data in them.

javan.graham

Hello Gurpreet, seems that when querying by ISIN, no CF fields are populated (however I am able to get other fields this way such as tr.bidyield), but only querying by RIC returns them...

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