Find all Rics in a chain

brian.keating

Hi,

Can someone point me in the right direction please.
I have a ChainRIC "1WSURF11"
When I use DSS portal I can see all the consistuents for 1WSURF under the Open Access Constituents tab

How would I find the same using the REST API?

tnx in advance,
Brian

Gurpreet

Hello @brian.keating,

You can use the Search/Historical Chain Resolution endpoint to get the chain constituents for your date range.

brian.keating

Thank you for replying @Gurpreet

I did try this with the sample .net project and a few different chains that I'm permissioned to see in the web portal, however I get a forbidden exception when trying via the API, I'm not sure why.

Gurpreet

Hello @brian.keating,

Historical Chain Resolution is only available to TickHistory users. The error message shows that you are not entitled to invoke this API call. You can speak to the LSEG account manager to get additional permissions, or you can use the Terms and Conditions extraction request from the ExtractWithNotes and specify RIC as the field that needs to be extracted in the output. This will lead to the expansion of the chain.

For e.g.:

{
  "ExtractionRequest": {
    "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.TermsAndConditionsExtractionRequest",
    "ContentFieldNames": ["RIC"],
    "IdentifierList": {
      "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
      "InstrumentIdentifiers": [{
          "IdentifierType": "ChainRIC",
          "Identifier": "0#HO:"
        }
      ],
      "ValidationOptions": {
        "AllowHistoricalInstruments": true,
        "AllowInactiveInstruments": true,
        "AllowOpenAccessInstruments": false
      },
      "UseUserPreferencesForValidationOptions": false
    }
  }
}

brian.keating

Tnx again @Gurpreet apreciate your responses, seems I dont have permission for the ExtractWithNotes either, I'll get the correct person to follow up with the Account Manager

tnx again for all your help.