取工作中心日历函数

    CALL FUNCTION 'CR_CAPACITY_AVAILABLE'
      EXPORTING
       datub                              = l_date_from
       datuv                              = l_date_from
       kapid                              = l_kapid
*       pdays_only                         = 'X'
*     DURATION                           =
       IMPORTING
            pdays                        = l_pdays
     EXCEPTIONS
       not_found                          = 1
       missing_parameter                  = 2
       no_capacity                        = 3
       date_outside_factorycalendar       = 4
       invalid_parameter                  = 5
       OTHERS                             = 6.