CALL FUNCTION ‘RSARCH_DATE_SHIFT‘ EXPORTING I_DATE = SY-DATUM i_shift = 1 i_shift_unit = ‘MON‘ I_OPTION = ‘GT‘ IMPORTING E_DATE = LE_DATA EXCEPTIONS ILLEGAL_SHIFT_UNIT = 1 OUT_OF_BOUNDS = 2 ILLEGAL_OPTION = 3 OTHERS = 4
原文：http://www.cnblogs.com/caizjian/p/4654875.html