Hi @xuewei.zhu ,

There might be several reasons for the error, so the logs and screenshot of the error would really help. However, in your code it seems you are trying to connect via platform session and you define it well. However, rd.open_session() may connect to desktop session. Since you are in desktop session, you may get the issue because of Workspace not running on the background or exceeding API limits enforced by the Workspace API proxy. Consider using the following code when you try connect via platform session:

session = rd.session.platform.Definition(
    app_key = APP_KEY, 
    grant = rd.session.platform.GrantPassword(
        username = RDP_LOGIN, 
        password = RDP_PASSWORD
    )
).get_session()
 
session.open()
 
rd.session.set_default(session)

Hope this helps.

Best regards,

Haykaz

Hi @xuewei.zhu ,

Could you please share the code you are using and the screenshot of the error so we investigate it further? Also, please find the troubleshooting guide which might be helpful to debug the issue -

Eikon Data API(Python) Troubleshooting | Refinitiv | Devportal (lseg.com)

Best regards,

Haykaz

I used very simple code of line to download the data

session = rd.session.platform.Definition(

app_key = APP_KEY,

grant = rd.session.platform.GrantPassword(

username = RDP_LOGIN,

password = RDP_PASSWORD

)

).get_session()

rd.open_session()

data = rd.get_history(universe = tickers, fields = fieldnames, interval = time_interval, start = startDate, end = endDate)

It only gives this error sometimes, most of the time it's working fine.

I am not able to replicate the problem at the moment but I can certainly try to use the debug mode to save the log which may give more information.

Thanks for the explanation. I will definitely try to get the log file next time when I have this error.

Do you know what the API limits are?