For an authoritative answer to any Eikon product and content questions, the best resource is the Refinitiv Content Helpdesk.
This forum is dedicated to things specific to the use of Eikon APIs.
The Refinitiv Content Helpdesk can be reached using Contact Us capability in your Eikon application.
Or by calling the Helpdesk number in your country.
Or at https://my.refinitiv.com/
So you can easily transform that into Eikon API call.
Search for bonds on Eikon Data API (using Python)
Construction of Corporate Bonds DTS measure.
When will bond search with Python be available in Eikon DAPI?
Fetching Underwriters with Valuation Date and PermID for a Bond
How can I get access to RSearch Library? And will it help me to access Bond RICs based on criterias?