call function 'DATE_CONVERT_TO_FACTORYDATE'
exporting
correct_option = '+'
date = sy-datum
factory_calendar_id = 'U2'
importing
date = lv_date
factorydate = lv_factory_lrmdt
EXCEPTIONS
CALENDAR_BUFFER_NOT_LOADABLE = 1
CORRECT_OPTION_INVALID = 2
DATE_AFTER_RANGE = 3
DATE_BEFORE_RANGE = 4
DATE_INVALID = 5
FACTORY_CALENDAR_NOT_FOUND = 6
OTHERS = 7.
after the fm is executed , i am not understanding how the lv_date and lv_date_lrmdt is calculated in fm. especially i nned to understand how lv_factory_lrmdt i calculated. please help