No date showing here

df_profit, err = ek.get_data(['GASI.MI']

,['TR.Revenue.date'

,'TR.EBITMarginPercent'

,'TR.TotalAssetsReported'

,'TR.ROATotalAssetsPercent'

,'TR.TotDebtTotAssetsPct'

]

,{'Scale': 6, 'SDate': 0, 'EDate': -3, 'FRQ': 'FY', 'Curn': 'EUR'})

I am trying to get data using this code, but there are some RIC returns with value but no value for the date?

I dont know the reason why? I hope I can get some help how to solve this.

Thank you so much