Maximum number of instrument identifiers in symbology lookup

stef

Hello on following endpoint

https://{{RDP_HOST}}/discovery/symbology/v1/lookup

I can do

{  "from": [    {      "identifierTypes": [        "ISIN"      ],      "values": [        "ISIN1",        "ISIN2",        "ISIN3",        "ISIN4",        "ISIN5",        "ISIN6"      ]    }  ],  "type": "Predefined",  "route": "FindPrimaryRIC"}

Question: What is the maximum numbers of isins that I can put in the array in the from field?

Thanks!

Gurpreet

Hello @stef

I could not find any reference to a hard number for the limit of instruments that can be passed in a single API call. Since the request payload is an HTTP POST, it can in theory be a very large number. The guides only refer to the number of results returned by the server and that pagination is used when the rows exceed 10,000.

There are a few reasons, why one should avoid overly large request message. It can lead to server request timeouts and chunking the request allows for better application logic and error handling control. In every case, the app should monitor the response codes from server to ensure that Throttling limits are followed:

If your use case requires symbology conversion for extremely large number of instruments, then a bulk CFS file server from Data Platform is a better fit. Please refer to these following guides -

Data Platform limits: https://developers.lseg.com/en/api-catalog/refinitiv-data-platform/refinitiv-data-platform-apis/documentation#rdp-api-general-guidelines

Symbology lookup reference guide: API Playground

Symbology user guide: https://developers.lseg.com/en/api-catalog/refinitiv-data-platform/refinitiv-data-platform-apis/documentation#symbology-user-guide

Article on bulk CFS service: https://developers.lseg.com/en/article-catalog/article/a-step-by-step-workflow-guide-for-rdp-client-file-store--cfs--ap