Ignore start transition when Sale Packing List is already started

When some Slave Instance allocated on some computer partition, it
trigger the "start" broadcast and sometimes some Sale Packing Lists are
already started, long ago.

master/bt5/vifib_base/WorkflowTemplateItem/portal_workflow/slave_instance_slap_interface_workflow/scripts/SlaveInstance_startComputerPartition.xml

@@ -50,11 +50,14 @@
         </item>
         <item>
             <key> <string>_body</string> </key>
-            <value> <string>isTransitionPossible = context.portal_workflow.isTransitionPossible\n
+            <value> <string>from Products.ERP5Type.Log import log\n
 packing_list_line = context.SlaveInstance_getInstanceHostingPackingListLine(state_change)\n
-packing_list = packing_list_line.getParentValue()\n
-if isTransitionPossible(packing_list, "start"):\n
-  packing_list.start()\n
+if packing_list_line.getSimulationState() != "started":\n
+  packing_list_line.getParentValue().start()\n
+else:\n
+  slave_instance = state_change["object"].getRelativeUrl()\n
+  log("Unable to start sale Packing List %s for Software Instance %s" % \\\n
+       (packing_list_line.getRelativeUrl(), slave_instance))\n
 </string> </value>
         </item>
         <item>

master/bt5/vifib_base/WorkflowTemplateItem/portal_workflow/software_instance_slap_interface_workflow/scripts/SoftwareInstance_startComputerPartition.xml

@@ -50,9 +50,14 @@
         </item>
         <item>
             <key> <string>_body</string> </key>
-            <value> <string>packing_list_line = context.SoftwareInstance_getInstanceHostingPackingListLine(state_change)\n
-packing_list = packing_list_line.getParentValue()\n
-packing_list.start()\n
+            <value> <string>from Products.ERP5Type.Log import log\n
+packing_list_line = context.SoftwareInstance_getInstanceHostingPackingListLine(state_change)\n
+if packing_list_line.getSimulationState() != "started":\n
+  packing_list_line.getParentValue().start()\n
+else:\n
+  software_instance = state_change["object"].getRelativeUrl()\n
+  log("Unable to start sale Packing List %s for Software Instance %s" % \\\n
+       (packing_list_line.getRelativeUrl(), software_instance))\n
 </string> </value>
         </item>
         <item>

master/bt5/vifib_base/bt/revision

-262
\ No newline at end of file
+263
\ No newline at end of file