<html><head><title>Error</title></head><body>The change activity with id=10019 could not be found. Query String=cmd=cancelChangeActivity&id=10019&comment=resetpasswordWebServiceCancel</body></html>If you examine the workflow, you will see that the request is stalled at the Manual Account Fulfillment node and has not proceeded to Stop or Cancel.
This issue occurs only when attempting to complete the Cancel Activity using a the Admin API Web Service call against a request that uses AFX but where the request has failed and has been redirected to Manual Fulfillment.
The problem occurs because there is no interaction with the user and the workflow does not know how to correctly complete the request. The Default AFX Manual Fulfillment Subprocess workflow has ambiguous transitions for the Cancelled and Completed transitions from the Manual Account Fulfillment nodes.
This issue may be resolved by modifying the Default AFX Manual Fulfillment Subprocess workflow to define a default path to the Stop node.
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This change makes the Completed transition the default transition for Manual Account Activities that are completed automatically.