No IDOC generated when PO is deleted

Question

I have a message control working for PO create and change. I have a user routine that checks if any one of the PO item has a material type 'ROH' and belongs to plant '2001'. This is the only condition when the IDOC has to be generated. This works fine too. But if I delete all the line items of the PO and have a break point at this user routine, the user routine is not triggered and break point is not reached and also IDOC is not generated.It just shows as error in the PO message header with the log
Output type: PO E
Processing log fo
Error : (Red bulb) - No items exist   .
Any idea why it is not working for deletion. Is deletion not another change ? And why is my user routine not invoked anytime one of the line items is deleted.
My user routines looks like this..
FORM kobed_911.
  DATA: plant_sw(1)  TYPE c,
        l_bustype(3) TYPE c.
  DATA:   tab_count(6)   TYPE n,
          low_werks(4)   TYPE c,
          low_vend(6)    TYPE c,
          find_sw(1) TYPE c,
          i_name     TYPE tvarvc-name,
          i_type     TYPE tvarvc-type.    "IC1K900750 end
  DATA: i_flag    TYPE c,
  i_pot     TYPE TABLE OF bekpo WITH HEADER LINE,
  l_tab(60) TYPE c,                                         "UN1K914326
  l_output  TYPE c.                                         "UN1K916720
  FIELD-SYMBOLS <prod>.                                     "UN1K914326
break roitmot.
  LOOP AT xnast WHERE kschl EQ komt1-kschl AND
                      objky EQ msg_objky   AND
                      aktiv EQ space       AND
                      vstat EQ '0'.
    EXIT.
  ENDLOOP.
  CHECK sy-subrc NE 0.
  sy-subrc = 4.
  l_output = 'N'.
* Process only on Create or Change...
  IF ( komkbea-druvo EQ neu OR komkbea-druvo EQ aend ) and (
komkbea-bsart = 'NB' ).
    l_tab = '(SAPLMEPO)pot[]'.
    ASSIGN (l_tab) TO <prod>.
    CHECK sy-subrc = 0.
    i_pot[] = <prod>.
    sy-subrc = 4.
    loop at i_pot.
      if i_pot-werks eq '2001' and i_pot-mtart eq 'ROH'.
        l_output = 'Y'.
      endif.
    endloop.
    if l_output eq 'Y'.
      clear sy-subrc .
    else.
      sy-subrc = 4.
    endif.
  ENDIF.
ENDFORM.                                                    "KOBED_973
*       FORM KOBEV_973                                                *
FORM kobev_911.
  DATA: plant_sw(1)  TYPE c,
        l_bustype(3) TYPE c.
  DATA:   tab_count(6)   TYPE n,
          low_werks(4)   TYPE c,
          low_vend(6)    TYPE c,
          find_sw(1) TYPE c,
          i_name     TYPE tvarvc-name,
          i_type     TYPE tvarvc-type.    "IC1K900750 end
  DATA: i_flag    TYPE c,
        i_pot     TYPE TABLE OF bekpo WITH HEADER LINE,
        l_tab(60) TYPE c,
        l_output  TYPE c.
  FIELD-SYMBOLS <prod>.
break roitmot.
  LOOP AT xnast WHERE kschl EQ t683s-kschl AND
                      objky EQ msg_objky   AND
                      aktiv EQ space       AND
                      vstat EQ '0'.
    EXIT.
  ENDLOOP.
  CHECK sy-subrc NE 0.
  sy-subrc = 4.
  l_output = 'N'.
* Process only on Create or Change...
  IF ( komkbea-druvo EQ neu OR komkbea-druvo EQ aend ) and (
komkbea-bsart = 'NB' ).
    l_tab = '(SAPLMEPO)pot[]'.
    ASSIGN (l_tab) TO <prod>.
    CHECK sy-subrc = 0.
    i_pot[] = <prod>.
    sy-subrc = 4.
    loop at i_pot.
      if i_pot-werks eq '2001' and i_pot-mtart eq 'ROH'.
        l_output = 'Y'.
      endif.
    endloop.
  ENDIF.
  if l_output eq 'Y'.
    clear sy-subrc .
  else.
    sy-subrc = 4.
  endif.
Also in my partner profile -message control, i have used Me10 twice, once with the check for change check-box and once without.
This is my cofig of message control tab in Partner profile :
App Messtyp    Proc.Code     change message
EF     Z005       ME10             
EF     Z005             ME10                      X
Thanks in advance.

Answer 1

did you get any resolution to why no idoc is generated when deletion happens?