Web Service: Web URL/_vti_bin/NintexWorkflow/Workflow.asmx
Method: ProcessFlexiTaskResponse
I'm able to execute the call if using my own account, but using a service account returns the following. The service account can access the service but not execute it. It's a site collection admin, and I've gone as far to add it to the site owners group. Why?
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
<soap:Body>
<ProcessFlexiTaskResponseResponse xmlns="http://nintex.com">
<ProcessFlexiTaskResponseResult>false</ProcessFlexiTaskResponseResult>
</ProcessFlexiTaskResponseResponse>
</soap:Body>
</soap:Envelope>



