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["Ferdinand @ Camptocamp" <746620@xxxxxxxxxxxxxxxxxx>]

IMHO a main problem of gap-less  is not solved :

for some documents (SO,PO,PICK, ...) the number is generated pressing "New".
Hence the number is "used" even if the user decides to abort / delete the document

workarounds
* the number should only be assigned in the workflow from state draft to anything but cancel
* prohibit deletion of numbered documents. not nice, but at least this would conform to accounting and audit  standards.

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https://bugs.launchpad.net/bugs/746620

Title:
  Implementation of faster gap-tolerant sequences

Status in OpenERP Server:
  Fix Released

Bug description:
  OpenERP is classified as an Enterprise class software package. Meaning
  that more than one person, at least 2 should be able to use the system
  simultaneously. Like packers shipping products, taking orders,
  reserving products. I find that in fact, it is not possible for
  creation of stock moves simultaneously.

   Say I am importing orders from a shop. It is creating stock moves  because the order is paid. 
  At the same time I am shipping products which is normal for an ERP system.
  I might also import orders from a separate shop say a POS system.
  It is not possible!
  [2011-03-31 13:10:47,657][midwestsupplies] WARNING:stock.location:Failed attempt to reserve 1.0 x product 1669, li
  kely due to another transaction already in progress. Next attempt is likely to work. Detailed error available at D
  EBUG level.  
  OperationalError: could not obtain lock on row in relation "ir_sequence"
  Two different errors.
  I  can only perform one action at a time!
  What happens is that any time the program calls for a stock_move it will lock the stock_move table so no other process can access it which means that you cant do hardly anything unless its done individually. Now say with a MS system, or any Enterprise system would be able to handle many simultaneous actions but this program has a serious architecture flaw to not be able to support this.

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