Posting_illegal_statement, call transaction not allowed

Question

Hi everybody !
I'm trying to create an order and then an invoice automatically when a first invoice is saved. For that, I've got an output type in VF01 which performs special function (8). This calls my program where I used two call transactions.
I've got the error 'POSTING_ILLEGAL_STATEMENT', with the message 'call transaction not allowed'.
I saw that the same question has been asked in this forum (messageID=876563), but it is still marked as 'not answered'...
Also, someone proposed to "not use 4-immediate processing. Create an event, using tcode SM62. Raise it in your code in the special function using BP_RAISE_EVENT.
Define a job to be triggered, after the event is raised and do all that you want to do in the job."
If I don't use 4-immediate processing, which one is better to use to process VA01 immediatly after saving the billing document ?
Then, if I create a job, as it is executed in background, I don't know how to debug it and which data I can access in the program called by the job. To create the order, I need the vbeln of the billing document just created. How can I have it ? Does the table nast contain it at this moment?
Thanks in advance !
Emilie

Answer 1

Hi Nicole,
Here's the coding of the call function :
  CALL FUNCTION 'BP_EVENT_RAISE'
    EXPORTING
      eventid                      = 'ZEVENT_FACT_TRIANG_AUTO'
*   EVENTPARM                    = ' '
*   TARGET_INSTANCE              = ' '
   EXCEPTIONS
     bad_eventid                  = 1
     eventid_does_not_exist       = 2
     eventid_missing              = 3
     raise_failed                 = 4
     OTHERS                       = 5
Regards,
Emilie