workflow deactivates in PP_COMPLETE_DOCUMENT_ENJ

Hi Experts,

I created accounting documents in FV50 and used the option in the menu bar - DOCUMENT -> SAVE AS COMPLETED.

While debugging i checked, there is an FM  - PP_COMPLETE_DOCUMENT_ENJ, in which at the below commit statements, the workflow gets deactivated.

if workf eq 'X'.

    commit work and wait.

  else.

    commit work.

  endif.

  if g_imess = 'X'.                                        "Note 574238

    CALL FUNCTION 'CUSTOMIZED_MESSAGE'                     "Note 574238

      EXPORTING                                            "Note 574238

        I_ARBGB       = 'FP'                               "Note 574238

        I_DTYPE       = 'I'                                "Note 574238

        I_MSGNR       = '001'                              "Note 574238

        I_VAR01       = bkpf-belnr                         "Note 574238

        I_VAR02       = bkpf-bukrs.                        "Note 574238

  endif.

i tried using both the commit statements, but it workflow gets deactiavted even if I use any of these commit statements.

i dont understand what can be the issue here. Has anyone faced the similar issue before ?

Thanks

Meenakshi