RS_BCT_READ_CPP is a standard SAP function module that performs functionality. This is available within standard R/3 SAP systems depending on version and release level.
Below are the pattern details for this FM showing its interface including any import, export and tables parameters. There is also a list of Exceptions and for your convenience any standard documentation available. All this information and more can also be viewed if you enter the function module name RS_BCT_READ_CPP into the relevant SAP transaction such as SE37 or SE80.
CALL FUNCTION 'RS_BCT_READ_CPP' "
EXPORTING
i_area = " upc_y_area
i_variable = " upc_y_variable
ito_chanm = " upc_yto_cha
IMPORTING
eto_charsel = " upc_yto_charsel
. " RS_BCT_READ_CPP