Chain resolution

aurelien.blanchard0

Hello,

I'm trying to replicate the DSS GUI behaviour when it comes to chain expansion.
i.e. go to Chains Search, then click Search:

And then click on the chain itself to see:

And so on…

Endpoint https://selectapi.datascope.lseg.com/RestApi/v1/Search/HistoricalChainResolution only works with a Tick History account. I'm using a DSS account. What's the alternative?

I've tried endpoint https://selectapi.datascope.lseg.com/RestApi/v1//Extractions/InstrumentListValidateIdentifiersbut it only validates that the the chain exists, not the chain constituents.

Do I have to extract the data through one of the templates instead?

Thanks in advance for your views.

Jirapongse

@aurelien.blanchard0

Thank you for reaching out to us.

To expand chains, you can use the DSS TermsAndConditionsExtractionRequest extraction. For example:

{

    "ExtractionRequest": {

        "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.TermsAndConditionsExtractionRequest",

        "ContentFieldNames": [

            "RIC"

        ],

        "IdentifierList": {

            "@odata.type": "#DataScope.Select.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",

            "InstrumentIdentifiers": [

                {

                    "Identifier": "0#HO:",

                    "IdentifierType": "ChainRIC"

                }

            ]

        },

        "Condition": {


        }

    }

}