Tick History Python Chain RIC not working

TomCroese

Hi all,

I'm new to using LSEG Tick History and currently working with the REST API in Python.

We're successfully able to extract data for a single RIC using the following identifier:

"IdentifierList": {
"@odata .type": "#DataScope.Select.Api.Extractions.ExtractionRequests.InstrumentIdentifierList",
"InstrumentIdentifiers": [
{
"Identifier": "PNCGYc1",
"IdentifierType": "Ric"
}
],
"UseUserPreferencesForValidationOptions": "false"
}

Now, we’d like to use a Chain RIC, such as 0#PNCGY:, to extract the data for all constituents in that chain. However, this is currently not working — the request either fails or returns no data.

Could you please confirm:

1. Whether Chain RICs are supported in Tick History API requests?
2. If supported, what is the correct way to pass them in the request? Are there any special parameters, identifier types, or preprocessing steps needed to use a Chain RIC?

Thanks in advance!