ABAP/4 Open SQL array insert results in duplicate databaserecordsfor pk13

Hi Experts, when I am working with pk13n tranaction iam getting an error message stating that update was terminated by user. when i am checking with st22 it gives the following message. please give the solution , iam sending the code as well.

An exception occurred that is explained in detail below.

The exception, which is assigned to class 'CX_SY_OPEN_SQL_DB', was not caught

in

procedure "SAVE_DATA" "(FORM)", nor was it propagated by a RAISING clause.

Since the caller of the procedure could not have anticipated that the

exception would occur, the current program is terminated.

The reason for the exception is:

If you use an ABAP/4 Open SQL array insert to insert a record in

the database and that record already exists with the same key,

this results in a termination.

(With an ABAP/4 Open SQL single record insert in the same error

situation, processing does not terminate, but SY-SUBRC is set to 4.) please find the below code please give the solution for this error message.

1 *eject

2 *----

---

*

3 * Verbuchen der Daten *

4 *----

---

*

5 FORM SAVE_DATA.

6

7 DATA: lf_menge LIKE ekpo-menge VALUE 0, "717464

8 lf_netwr LIKE ekpo-netwr VALUE 0.

9

10 * Einteilungen löschen --> Array Delete aus Tabelle DEKET

11 DESCRIBE TABLE DEKET LINES SY-TFILL.

12 IF SY-TFILL GT 0.

13 DELETE EKET FROM TABLE DEKET.

14 IF SY-SUBRC NE 0.

15 MESSAGE A865.

16 ENDIF.

17 EKET_DELETE = EKET_DELETE + SY-DBCNT.

18 REFRESH: DEKET.

19 CLEAR : DEKET.

20 ENDIF.

21

22 * Einteilungen hinzufügen --> Array Insert aus Tabelle IEKET

23 DESCRIBE TABLE IEKET LINES SY-TFILL.

24 IF SY-TFILL GT 0.

>> INSERT EKET FROM TABLE IEKET.

26 IF SY-SUBRC NE 0.

27 MESSAGE A864.

28 ENDIF.

29 EKET_INSERT = EKET_INSERT + SY-DBCNT.

30 REFRESH: IEKET.

31 CLEAR : IEKET.

32 ENDIF.

33

34 * Check whether the qty in EKPO-MENGE is correct: note 717464

35 SELECT SUM( menge ) FROM eket INTO lf_menge

36 WHERE ebeln = ekpo-ebeln

37 AND ebelp = ekpo-ebelp.

38 IF sy-subrc = 0 AND ekpo-menge <> lf_menge.

39 IF ekpo-ktmng <> 0.

40 refe1 = ekpo-zwert * lf_menge / ekpo-ktmng.

41 ELSE.

42 refe1 = ekpo-zwert * lf_menge / 1000.

43 ENDIF.

44 IF refe1 > maxwert.