Error message while trying to process an task of an old instance of a workflow template

[Guy Brotzki]

Hello to you all

After changing a workflow template and trying to process a task of an old instance of the same workflow template I'm getting this message :
"
Work item 000008261697: Object PRD400 ZBUS2007C 000002116691 method EDIT_ASYNCHRONOUS cannot be executed
Message no. WL 821
Diagnosis
The call of the object methods for the work item ended with a return code for which there is no handling defined in the workflow. This is regarded as an error by the work item manager (WIM). 
System Response
The work item was set to error status, the return values from the object method were saved.
Procedure
Check the saved return values of the object method. In particular, check whether
*	an application (ERRORCODE = 1) or
*	a system error (ERRORCODE = 2) is involved.
In the case of an application error, please check your workflow definition and the implementation of your object methods.
In the case of a system error, please contact your workflow system administrator. In this case also check whether there is an error in the binding definition between task and method.
"

The change I've made is a minor one, I've enterd a condition before the failed step, the same steps and task are used in the new version, 
and in new instances of this workflow, and by the same user who faild to process the old instance step, the step had been process successfully.
Have you enccunterd this kind of error, can you tell me what is the best way to deal  with it ?
We are working on Rel 4.6C. Support Package 40.

Thanks in advance
__________________
Guy Brotzki
PM System Analyst
MIS - Cellcom Israel
972 - (0)52-9980866, 972 - (0)52-2499801



__________________
גיא ברוצקי
מנתח מערכות PM
מחלקת מערכות ניהוליות - MIS
052-2499801, 052-9980866


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Thank You.
http://www.cellcom.co.il


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