Non-restartable Update Function Module

Former Member — Sun, 31 Jul 2011 13:31:42 GMT

Dear experts,

I'm studying about the non restartable update function modules. Curiously, I created a simple non restartable update function module as follows:


FUNCTION Z_UPDATE_MODULE.
*"----------------------------------------------------------------------
*"*"Update Function Module:
*"
*"*"Local Interface:
*"  IMPORTING
*"     VALUE(IMP_ZSCARR) TYPE  ZSCARR
*"----------------------------------------------------------------------

  INSERT zscarr FROM imp_zscarr.

  IF sy-subrc > 0.
    MESSAGE 'Problem at Z_UPDATE_MODULE' TYPE 'A'.
  ENDIF.
ENDFUNCTION.

I ran the module above by using imp_zscarr parameter with key fields which will make the INSERT operation fail due to the existing primary key in the destination table. As expected, I receive a message that the operation was not successful. Later, I deleted the row in the destination table whose key fields equal to the key fields in the imp_zscarr parameter I previously used. Then, I opened the transaction SM13 to see the update request table. There, as expected, I saw the previous update request which was marked as fail. Then, I selected the entry and then clicked the Repeat Update button. Unexpectedly, since this was a 'non restartable update module', the repeated update was successful and a new row was entered to the destination table.

Was there something wrong with my test method or this was all a normal behavior after all?

Thanks in advance.

Regards,

Haris

Re: Non-restartable Update Function Module

Sandra_Rossi — Sun, 31 Jul 2011 16:48:24 GMT

Hi Haris,

I must admit I was surprised too (because I reproduced the same issue as yours, but I know standard no-restart function modules cannot be restarted), so I debugged SM13, and found you have to set at least one SAP lock to transmit to the update task, in that case you cannot restart the LUW.

Sandra

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