Get date F4 help for date with holiday calendar

We can highlight public holiday in F4 date help we can achieve this by using the calendar id i.e. “IN” for India or any other calendar id defined in the SCAL transaction.

FM for F4 help for dialog program

1. This f4 help for customer based on some logic

PROCESS BEFORE OUTPUT.

PROCESS AFTER INPUT.

PROCESS ON VALUE-REQUEST.
 FIELD: g_tab-KUNNR MODULE f4_kunnr. "Customer
Types :
*Cutomer details
BEGIN OF ty_kunnr,
  kunnr TYPE kunnr,
  name2 TYPE char20,
  name3 TYPE char20,
END OF ty_kunnr,

Data:
  g_t_kunnr             TYPE  STANDARD TABLE OF ty_kunnr,
  REFRESH  g_t_kunnr.
  SELECT a~KUNN2"Customer number of business partner
         b~NAME2"Customer department
         B~NAME3"Contracting Party
     from KNVP as a
      INNER JOIN kna1 as b
    on a~kunn2 = b~kunnr
    INTO TABLE g_t_kunnr
      WHERE VKORG like '100%'
        and PARVW = 'RE'."Bill to party
  IF sy-subrc = 0.
    SORT g_t_kunnr  by kunnr.
  ENDIF.

CALL FUNCTION 'F4IF_INT_TABLE_VALUE_REQUEST'
    EXPORTING
      retfield         = 'KUNNR'"Field from Table g_t_kunnr
      dynpprog         = sy-repid
      dynpnr           = sy-dynnr
      DYNPROFIELD      = 'KUNNR' “Screen field for the dilog program 
      value_org        = g_c_s
      callback_program = sy-repid
      callback_form    = space
    TABLES
      value_tab        = g_t_kunnr “Any type of table 
      return_tab       = g_t_return_val
    EXCEPTIONS
      parameter_error  = 1
      no_values_found  = 2
      OTHERS           = 3.