form FRM_GET_WORKING_DAYS
TABLES pt_days
CHANGING pv_duration.
DATA:ls_xt001w TYPE t001w,
lv_sdate TYPE sy-datum,
lv_edate TYPE sy-datum.
* Get the factory calendar for specific plant
SELECT SINGLE * FROM t001w INTO ls_xt001w
WHERE werks IN s_plant. " Use your plant
* Set start date
CONCATENATE sy-datum+0(6) '01' INTO lv_sdate.
* End date
CALL FUNCTION 'RP_CALC_DATE_IN_INTERVAL'
EXPORTING
date = lv_sdate
days = 0
months = 1
signum = '+'
years = 0
IMPORTING
calc_date = lv_edate
EXCEPTIONS
OTHERS = 2.
* Get working days in between
CALL FUNCTION 'DURATION_DETERMINE'
EXPORTING
factory_calendar = ls_xt001w-fabkl
IMPORTING
duration = pv_duration " In days
CHANGING
start_date = lv_sdate
end_date = lv_edate
EXCEPTIONS
factory_calendar_not_found = 1
date_out_of_calendar_range = 2
date_not_valid = 3
unit_conversion_error = 4
si_unit_missing = 5
parameters_not_valid = 6
OTHERS = 7.
WHILE lv_sdate < lv_edate.
CALL FUNCTION 'DATE_CHECK_WORKINGDAY'
EXPORTING
date = lv_sdate
factory_calendar_id = ls_xt001w-fabkl
message_type = 'I'
EXCEPTIONS
DATE_AFTER_RANGE = 1
DATE_BEFORE_RANGE = 2
DATE_INVALID = 3
DATE_NO_WORKINGDAY = 4
FACTORY_CALENDAR_NOT_FOUND = 5
MESSAGE_TYPE_INVALID = 6
OTHERS = 7
.
IF sy-subrc eq 0.
append lv_sdate to pt_days.
ENDIF.
CALL FUNCTION 'RP_CALC_DATE_IN_INTERVAL'
EXPORTING
date = lv_sdate
days = 1
months = 0
signum = '+'
years = 0
IMPORTING
calc_date = lv_sdate
EXCEPTIONS
OTHERS = 2.
ENDWHILE.
endform.
We can get working days easily by 'describe table lines ' of pt_days ,this is merely a demo of FM usage,not making an unnecessary move
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