I have been using EIKON API for a long time with the same configuration but this noon i have received a message indicating that i am limited "for too many request" and needed to wait almost 10 hours to start sending queries again. Is there a policy change in EIKON API request frequency?
2021-06-01 14:25:42,515 P [MainThread 24832] Error code 429 | Client Error: Too many requests, please try again later. Wait for 34458 seconds.
2021-06-01 14:25:42,515 P [MainThread 24832] HTTP request failed: EikonError-Client Error: Too many requests, please try again later. Wait for 34458 seconds.
I do not believe you are facing a change on Eikon Data API side. Please see this previous discussion thread for details, as well as Eikon Data API Limits document for more detail. It may be helpful to analyze the request pattern to understand the cause.
Hope this information helps.