Is there a limit on how many request can a client/username be running simultaneously? e.g. can one account requests 500 news headers, 500 RICs and 500 news stories the same second?
Looking through the guidance and tutorials there seems no such limit?
I have checked the latest version of the RKD API development document on the RKD API product page, you can find the user throttling logic in section 41 "Web Service User Throttling" of the document.
Additionally, the request limit of each RKD API endpoint is different. Please see the examples below:
Hope this helps.