REFERENCE(E_VOLA_OBJ) TYPE /BA1/F4_STR_VOLA_OBJ
REFERENCE(I_VOLA_OBJ) TYPE /BA1/F4_STR_VOLA_OBJ
REFERENCE(I_VOLA_OLD) TYPE /BA1/F4_STR_VOLA_OBJ OPTIONAL
REFERENCE(I_VOLA_NEW) TYPE /BA1/F4_STR_VOLA_OBJ
REFERENCE(I_NEW_VOLA) TYPE /BA1/F4_STR_VOLA_OBJ
REFERENCE(I_OLD_VOLA) TYPE /BA1/F4_STR_VOLA_OBJ