Backend error. 400 Bad Request

davileon

Hi,

I've been having this problem since Monday with the different codes and it used to work properly (Backend error. 400 Bad Request, HTTP request failed: EikonError-Backend error. 400 Bad Request). Is there a problem with the server connection?

Here is an example:

def descargar_info(rics,fecha_inicio,fecha_final, fields_papel, decision, historico,ric_por_llamado, nombre_archivo):

    #decision=1 descargar informacion

    #decision <> 1 tomar archivo ya descargado

    #historico = 0, datos a 1 fecha especifica

    #historico <> 0 datos historicos periodicidad diaria


    if decision==1:

        array_ric_list = []

        ric_per_call = ric_por_llamado

        h = 0

        while h < len(rics)/ric_per_call:

            array_ric_list.append(rics[h*ric_per_call:(h+1)*ric_per_call])

            h += 1


        parametros = pd.DataFrame()

        h = 1


        for riccodes in array_ric_list:

            start_time2 = datetime.now()

            print("grupo "+ str(h)+ '/'+str(len(array_ric_list)))

            if historico == 0:

                ts1,e1 = ek.get_data(riccodes, fields_papel,{'SDate':fecha_final,'EDate':fecha_final,'Frq':'D'})

            else:

                ts1,e1 = ek.get_data(riccodes,fields_papel,{'SDate':fecha_inicio,'EDate':fecha_final,'Frq':'D','NULL' : 'prev'})


            parametros = pd.concat([parametros,ts1], axis=0)

            time.sleep(5) #delay between each API call

            end_time = datetime.now()

            print('Duration: {}'.format(end_time - start_time2))

            h = h+1


        parametros.reset_index(drop=True, inplace=True)

        parametros.to_csv(nombre_archivo, index=False)

    else: 

        parametros = pd.read_csv(nombre_archivo)


    return parametros


fields_papel = ["TR.MODIFIEDDURATION","TR.FiFitchsRating", 

"TR.FiMoodysRating", "TR.RiskCountryCode", 

"TR.FiMaturityDate", "TR.TRBCEconomicSector", "TR.CommonName"]

parametros=descargar_info(rics,today,today, fields_papel, descargar, 0,15, "parametros.csv")

Jirapongse

@davileon

Thank you for reaching out to us.

According to the Eikon Data API Usage and Limits Guideline:

When a request fails because the platform is overwhelmed, an HTTP response with status code 400 and the message "Backend error. 400 Bad Request" is returned. Then the Python library raises an EikonError exception with the following message:.

The application may reduce the number of items in the request or implement try/except to catch this exception and then retry, as shown in this discussion.

davileon

https://community.developers.refinitiv.com/discussion/comment/123269#Comment_123269

Hello @Jirapongse,

Thanks for replying. I've been executing these codes for over two years, and it used to work properly. The code already limits the quantity of RICS per request, but it doesn't work. I've been reading this forum and there are other people asking for the same error (for example get_lots_of_data function for the Pyhton LSEG Data Library - LSEG Developer Community).

Is there an error on the server connection?

Thanks in advance for your help.

Jirapongse

https://community.developers.refinitiv.com/discussion/comment/123278#Comment_123278

@davileon

If the error is "Backend error. 400 Bad Request", it should be the problem on the backend, not in the code, as mentioned on this guideline.