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web service ProcessTaskResponse3 call for to-do task error 'Server was unable to process request'

Question asked by mwillmer on Sep 3, 2015
Latest reply on Oct 13, 2015 by

Hi, fellow devs.

I'm using Nintex Workflow 2013 ( - I know this is not the latest, but it what I have to work with.

I have encountered a problem using the web service call processTaskResponse3 to complete a 'to-do task'.

I used the blog Build a Better Nintex Workflow "Assign To-Do Task" Form to create the workflow, etc.

I need to set the task to 'Complete' programmatically and I'm trying to use the web service call ProcessTaskResponse3 to do this via javascript.

I can get the task id using GetRunningWorkflowTasksForListItem so I know the web service and code works.

The SDK…

provides the following SOAP request which I've used:


<soap:Envelope xmlns:soap="" xmlns:nin="">




         <nin:comments>First attempt</nin:comments>



         <nin:taskListName>Workflow Tasks</nin:taskListName>





It interesting that 'outcome' is a enum and I would have thought that using the value of 5 = Complete would have been correct but the response says the value is incorrect. Using the string 'Continue' doesn't give this response.


The response I get states:

     "Server was unable to process request. ---&gt; Invalid field name. {819e6cf2-36c3-4013-8aef-c99712c26036}  /Lists/Workflow Tasks"


Can anyone please shed light on how I can get this call to work?