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@tserenbat.uyanga Thanks for your question - unfortunately the Eikon Data API get_news_headlines call only provides Headline search queries at this time.
I will pass your suggestion over to the product owner.
Trying to fetch Close Bid Price for CMO tranche from Python
Retrieve Commodity Flows data using Python API
Company trees don't match in Eikon online tool and the Eikon Proxy API
When will bond search with Python be available in Eikon DAPI?
Get Instruments by exchange or country?