Hi,
i think /BI0/OIINV_QTY and /BI0/OINETVAL_INV key have custom Key figures menas it will start -/BIC/XXXXX.
try the below code
DATA:
DOC_TYPE type /BI0/OIDOC_TYPE,
INV_QTY TYPE /BIC/OIINV_QTY,
NETVAL_INV TYPE /BIC/OINETVAL_INV,
lv_data type table of _ty_s_TG_1,
wa_data type _ty_s_TG_1.
loop at RESULT_PACKAGE into wa_data where doc_type = 'ZNC' or
doc_type = 'ZND'.
INV_QTY = '0'.
NETVAL_INV = '0'.
modify RESULT_PACKAGE from wa_data.
endloop.
Thanks,
Phani.