Hello @henry.sharr,

The way to look up the search functionality, including all existent searches with all the available parameters would be in DSS API Reference Tree

There are several searches that are specific to instrument type, so as you are interested in a specific instrument type, you may find that instrument type search is the more efficient, instead of searching by starting date.

I would try HistoricalCriteriaSearch, with name pattern, and limit the dates after a certain timestamp. For example:

{
  "Request": {
    "RicPattern": ".N$",
    "BondTypeCodes": null,
    "ContributorIds": null,
    "CountryCodes": null,
    "CurrencyCodes": null,
    "ExchangeCodes": null,
    "FutureMonthCodes": null,
    "InstrumentTypeCodes": null,
    "OptionMonthCodes": null,
    "OptionTypeCodes": null,
    "CouponRate": null,
    "StrikePrice": null,
    "ExpiryDate": null,
    "MaturityDate": null,
    "Range": {
      "Start": "2010-11-07T00:00:00.000Z",
      "End": "2010-11-08T00:00:00.000Z"
    }
  }

these are instruments that existed within the defined range, not issued within it.

If you go this route, please try to limit your request, so that you get back a manageable instrument set within reasonable response time.

If you don't find what you are looking for, there is another way to approach this. If you are more comfortable with working on DSS GUI, you may define the search terms that work for you on DSS GUI first, and then translate the search into request.

Lastly, if you are a customer, you may contact Content Helpdesk, so Refinitiv content experts help you define the logic of the search you are looking for, or help define the instrument list for you.