BDC synchronisation problem.

Question

Hello !!
I have two "call transaction" calls in abap for the same production order (first - CO01, second CO02).
Unfortunatly very often when second one is triggered i have an error like : object is blocked / reserved for user....
Is there any way to trigger second one when first is really finished ?? (i have tried with different update modes but it  doesn't solve the problem)
Br, Jacek

Answer 1

Couple of ways to do this.  In the Call transaction CO01,  use update 'L'  for local.  IF that doesn't help,  put a delay in it using WAIT statement.  If you want to ge a different way, you can use the lock object and keep trying to get a look before calling CO02.
Something like this.
* Keep waiting till the previous locks have been released.
while sy-subrc <> 0.
  call function 'ENQUEUE_ESORDER'
   exporting
*   MODE_AUFK            = 'E'
     mandt                = sy-mandt
     aufnr                = p_aufnr
*   X_AUFNR              = ' '
*   _SCOPE               = '2'
      _wait                = 'X'
*   _COLLECT             = ' '
   exceptions
     foreign_lock         = 1
     system_failure       = 2
     others               = 3
  wait up to 1 seconds.
endwhile.
* Once you get a lock, release it and call transaction CO02
call function 'DEQUEUE_ESORDER'
EXPORTING
   MANDT           = SY-MANDT
   AUFNR           = p_aufnr.
call transaction 'CO02'.
Regards,
Rich Heilman