How to update and delete telephone no in BAPI_BUPR_CONTP_ADDR_CHANGE

Hi All,

I have read lot of forum related to this. but still this problem exist.I want to update the telephone no and email id of Contact person.

I am usingBAPI_BUPR_CONTP_ADDR_CHANGE

but it never allows to update or delete.

it gives message "Telephone number XXXXX / does not exist. Change/deletion not possible.

Please help.

Why it is not allowing change deletion.

1.logic to change any existing number

     ls_telx-telephone = 'X'.

      ls_telx-std_no = 'X'.

      ls_telx-updateflag = 'D'.

      append ls_telx to lt_telx.

      ls_teL1-telephone = LS_TEL-TELEPHONE .

      ls_teL1-CONSNUMBER = ls_tel-CONSNUMBER.

      ls_tel1-std_no = 'X'.

      APPEND LS_TEL1 TO LT_TEL1.

Then i am calling BAP

2. CALL FUNCTION 'BAPI_BUPR_CONTP_ADDR_CHANGE'

  EXPORTING

    businesspartner = 'BP no'

    contactperson   = 'CP no'

  TABLES

    bapiadtel      = lt_tel1

    bapiadtel_x     = lt_telx

    return          = lt_bapiret2.

CALL FUNCTION 'BAPI_TRANSACTION_COMMIT'

  EXPORTING

    wait = 'X'.

I