Webservice Dialog - restart after error

Tue Feb 13 11:53:19 EST 2007

The lock / unlock created at the method call will take effect for all the 
WFs using that BO's method.

Multiple people can get the same worktiems, but you expect only one to 
execute the workitem.

Until some one reserves the workitem, others will have the visibility of WI 
in the inbox, as you know.

When one user executes this WI, and not yet completed filling out the form, 
no other user will be able to execute and fill out the same form....

( which is a rare case unless you have the other people inbox showing the 
workitem but not yet refreshed )

when I say same form, each form is distinctly identifiable by key fields of 
a table that has the structure of the form. Am I right in assuming that? 
Otherwise it is the specific instance of that particular BO.

regards
Srinivasan

>From: "Sue Doughty" <Sue.Doughty at odfl.com>
>Reply-To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
>To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
>Subject: RE: Webservice Dialog - restart after error
>Date: Tue, 13 Feb 2007 10:33:36 -0500
>
>They are custom workflows.  There are multiple workflows using this
>object doing different things that could be running at the same time.
>
>The object is not currently extended.  The method is PROCESSDIALOG.
>
>Question:  If you put a lock on the method, is it good just for the
>current workflow?  Will it affect other workflows using the method?
>There are also forks in the workflows, where multiple people could
>receive a work item at the same time that execute this method.  Would
>the lock affect this situation?
>
>Thank you so much for your help.
>
>Sue Doughty
>
>
>
>-----Original Message-----
>From: sap-wug-bounces at mit.edu [mailto:sap-wug-bounces at mit.edu] On Behalf
>Of Srinivasan Ramanan
>Sent: Tuesday, February 13, 2007 9:46 AM
>To: sap-wug at mit.edu
>Subject: RE: Webservice Dialog - restart after error
>
>Let me know some more details :
>BO is WEBSERVICE
>Are u using a custom workflow? Then what is the method executed by BO?
>Is it an extended object method?
>
>-----
>anyway some info about how to use Enqueue and Dequeue
>
>Look for the table structure used by BO webservice.
>And in ABAP look for ( using SE80 - Dictionary tab , select 'Lock
>object'
>and search for )
>Use FM 'ENQUEUE_E*' where * is the lock object name .
>
>you have to use the FM ENQUEUE in the BO's method.
>After completion of filling the form, then use FM ...DEQUEUE.
>
>Thus once while some one is executing the object's method, the exclusive
>lock will not allow the execution of method by some other agents logon
>or by same users other session.
>
>Since we do not have this BO in my current client system, I could not
>actually get you the lock objetc name.
>
>
>regards
>Srinivasan
>
> >From: "Sue Doughty" <Sue.Doughty at odfl.com>
> >Reply-To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
> >To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
> >Subject: RE: Webservice Dialog - restart after error
> >Date: Tue, 13 Feb 2007 08:08:36 -0500
> >
> >Srinivasan,
> >
> >Thank you for the information.
> >
> >The BO is WEBSERVICE.  How would I set up an "Enqueue"?
> >
> >
> >Sue Doughty
> >
> >
> >
> >-----Original Message-----
> >From: sap-wug-bounces at mit.edu [mailto:sap-wug-bounces at mit.edu] On
>Behalf
> >Of Srinivasan Ramanan
> >Sent: Monday, February 12, 2007 4:20 PM
> >To: sap-wug at mit.edu
> >Subject: RE: Webservice Dialog - restart after error
> >
> >
> >Hi Sue,
> >Error in call back processing will occur in the situation you
>explained.
> >It will happen even if you try to simulate the same condition of
>opening
> >forms twice in two session of SAP from within workitem inbox.
> >
> >If I understand correctly you are having this issue with custome
> >developed workflows.
> >Your options are :
> >         1. If BO associated with the workitem is std SAP check if you
> >can use 'ENQUEUE' .
> >         2. If it is custom developed BO itself , you should create an
> >'ENQUEUE' object ( lock object in ABAP ), then lock it after it is
> >opened for the first time. Hence the same form can not be opened second
> >time. I think you also do not the forms to be opened twice or more in
> >successions.
> >
> >regrads
> >Srinivasan
> >
> > >From: "Sue Doughty" <Sue.Doughty at odfl.com>
> > >Reply-To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
> > >To: "SAP Workflow Users' Group" <sap-wug at mit.edu>
> > >Subject: RE: Webservice Dialog - restart after error
> > >Date: Mon, 12 Feb 2007 11:55:24 -0500
> > >
> > >I didn't get any replies on sending this out last week.  Can anyone
> > >help?
> > >
> > >Sue Doughty
> > >
> > >
> > >________________________________
> > >
> > >From: sap-wug-bounces at mit.edu [mailto:sap-wug-bounces at mit.edu] On
> > >Behalf Of Sue Doughty
> > >Sent: Monday, February 05, 2007 8:38 AM
> > >To: SAP Workflow Users' Group
> > >Subject: Webservice Dialog - restart after error
> > >
> > >
> > >We are on 4.7, Basis 6.40.
> > >
> > >We have in-house developed workflows that execute Webservice Dialogs
>--
> >
> > >they open web pages for the users to enter data and then the user
>hits
> > >the submit button, which completes the task and the workflow sends
>the
> > >request to the appropriate managers for approval, etc.
> > >
> > >Sometimes, the users execute the work items more than once -- which
> > >they then have more than one web page open at once.  When they
>complete
> >
> > >the form that is other than the first form opened and click submit,
>it
> > >causes the workflow to go into error status with an "Error in
>callback
> > >processing" and "Invalid execution GUID. Work item could not be
> > >completed".
> > >
> > >When we get the email notifications of these errors, all we have to
>do
> > >is "Restart after error" and everything continues.
> > >
> > >My question:  Is there a way inside the workflow that I can do a
> > >'restart after error'?  I can see in the Workitem container where the
> > >Workitemstatus = 'ERROR'.  Is there a workflow step that can be done
> > >that will let the workflow continue without manually doing the
> > >"restarting after error" or is there a way that the workflow can tell
> > >if the work item has already been executed -- that there is already a
> > >web page open?
> > >
> > >Any help would be appreciated.
> > >
> > >Sue Doughty
> > >
> > >
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