I am having problem with the parameter "CH", which is not supporter in the fundamental_and_reference.Definition. And there is nothing about it in the docummentation here
https://cdn.refinitiv.com/public/rd-lib-python-doc/1.0.0.0/book/en/sections/content-layer/fundamental-reference/fundamental-and-reference-definition.html
from refinitiv.data.content import fundamental_and_reference
df_earnings_surprise= pd.DataFrame()
definition = fundamental_and_reference.Definition( universe = br_instruments, fields = ['TR.NetProfitPreSurprise.calcdate', 'TR.NetprofitSmartEst(Period=CY2025)',
], parameters = { 'SDate': '1', 'EDate': '-24', 'Frq': 'W', 'Curn': 'BRL', #'CH': 'IN;Fd', #HERE IS THE PROBLEM #'RH': 'date', #already substitued in row_headers 'Scale':6 }, row_headers="date",
)