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I need to resolve a chain of historical RICS, e.g. 0#TFI: how do I qualify historical RIC chains in the API?

The Refinitiv Developer Portal has a working example of Chain Resolution and it is included in Tutorial 15 of the current Postman collection. This works fine, but I have a chain that resolves to "Historical RICs" and so requests need to be qualified. . Can I apply something similar for the chain resolution of 0#TFI: ? At the moment using the tutorial 15 example as is, I get an error message for "0#TFI:" but I do not get with "0#DJI:"

{

"@odata.context": "https://hosted.datascopeapi.reuters.com/RestApi/v1/$metadata#Collection(ThomsonReuters.Dss.Api.Search.HistoricalChainInstrument)",

"value": []

}



In in a tick history Time and Sales on demand request in the API I need to specify the following after the instrument list like this extract below (see "ValidationOptions section).

"IdentifierList": {

"@odata.type": "#ThomsonReuters.Dss.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",

"InstrumentIdentifiers" : [

{

"Identifier" : "TIEFJ21",

"IdentifierType" : "Ric"},

{ "Identifier" : "TIEFK21",

"IdentifierType" : "Ric"

}

],

"ValidationOptions": {"AllowHistoricalInstruments": true},

"UseUserPreferencesForValidationOptions": false

},

tick-history-rest-apichain-ric
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Hello @mark.ringrose,

In my understanding, in order to use an identifier (ChainRIC) as input into any searches or extractions, it has to first be found/recognized by Datascope.

Unfortunately, I could not find this identifier neither via Datascope GUI search nor via API request searches.

However, as DJI chain appears to be 0#.DJI rather then 0#DJI:, perhaps you are looking for 0#.TFII, or perhaps another slightly different chain, can it be that the chain you are looking for is slightly different, according to Eikon search, there are several suggestions of similar chains.

Would it make sense to involve content experts directly via Refinitiv Helpdesk Online -> Content -> RTH, once you are able to identify the required via content, then it can be submitted via API?


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My mistake - there was an error in the chain RIC in my Postman example. My fault.

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