Hello @alex.yermolayev

I have tried your Eikon Data API function call but I cannot replicate the issue in my environment. My application does not encounter the problem. Does the problem still persist in your environment?

Code:

import eikon as ek
ek.set_app_key('3....')
df, err = ek.get_data(
    "MYSUK140361=", [
        "TR.FIIssuerName",
        "TR.FiIssuerShortName",
        "TR.FiDebtTypeShortDescription",
        "TR.FiParentImmedLongName",
        "TR.FiParentLongName",
        "TR.FiIndustrySectorDescription",
        "TR.FiIndustrySubSectorDescription",
        "TR.FiOrgID",
        "TR.FiAssetType",
        "TR.FiParentIndustrySector",
        "TR.FiIndustrySubSectorDescription",
        "TR.FiParentIssuerName",
        "TR.FiParentImmedTicker",
        "TR.FiParentImmedIssuerOrganization",
        "TR.FiParentIssuerName",
        "TR.FiParentSPIndustryDescription",
        "TR.IssuerTickerCode"
    ]
)
print(df)

Result:

Instrument                       Issuer Name Issuer Short Name  ... Ultimate Parent Company Parent SP Industry Description Issuer Ticker
0  MYSUK140361=  BANDAR SERAI DEVELOPMENT SDN BHD      Bandar Serai  ...                  Gamuda                       Building         GAMUB

[1 rows x 18 columns]

I don't reproduce the issue and retrieve a valid result.

Could you confirm you reproduce the issue systematically ?