How can i validate a path

hi experts,
how can i validate a path... i tried to use cl_gui_frontend_services=>directory_exist
but it gives me an error
for a local path and an app server path??
thx in advance

Hi Carlos,
you follow the below coding, where you will get to separate validation
for presentation server & application server file path.
FORM present_validation .
  DATA: lw_check TYPE c,
        lw_file TYPE string.
  IF po_psv IS INITIAL.
    IF sy-ucomm = 'ONLI' OR sy-ucomm = space.
      MESSAGE  'Please input the file name' TYPE lc_e.
    ENDIF.
  ELSE.
    lw_file = po_psv.
    lw_check = cl_gui_frontend_services=>file_exist( lw_file ).
    IF lw_check IS INITIAL.
      MESSAGE  'Please input the correct file path' TYPE lc_e.
    ENDIF.
  ENDIF.
ENDFORM.                    " PRESENT_VALIDATION
FORM application_validation .
  DATA: lw_file TYPE string.
  lw_file = po_asv.
  IF po_asv IS INITIAL.
    IF sy-ucomm = 'ONLI' OR sy-ucomm = space.
      MESSAGE  'Please input the file name' TYPE lc_e.
    ENDIF.
  ELSE.
    OPEN DATASET lw_file FOR INPUT IN TEXT MODE ENCODING DEFAULT.
    IF sy-subrc NE 0.
      MESSAGE  'Please input the correct file path' TYPE lc_e.
    ENDIF.
  ENDIF.
ENDFORM.                    " APPLICATION_VALIDATION
Hope this can solve your problems.
Regards,
Tutun

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