Workflow Error: "Cannot set workflow participant."

(Doc ID 1942773.1)

Last updated on JULY 07, 2017

Applies to:

Oracle WebCenter Sites - Version 7.6.2 and later
Information in this document applies to any platform.

Symptoms

Errors are shown when trying to assign an asset to workflow.

After selecting a workflow, the browser shows an error message:

"Cannot set workflow participant.
The most likely cause of this error is a system configuration error. Please contact your system administrator for help."

The futuretense.txt/sites.log contains an exception:
[2014-11-04 17:06:18,950] [fatwire.logging.cs.xcelerate] [pagename=OpenMarket/Xcelerate/Actions/SetWorkflowPost] Error: com.openmarket.xcelerate.commands.WorkflowEngineDispatcher: GetPotentialParticipants: java.lang.NullPointerException
java.lang.NullPointerException
   at com.openmarket.xcelerate.user.CCUserPub.getUser(y:2205)
   at com.openmarket.xcelerate.user.UserManager.buildUser(y:633)
   at com.openmarket.xcelerate.user.UserManager.getUsers(y:2739)
   at com.openmarket.xcelerate.workflow.WorkflowEngine.buildCandidateParticipants(y:3837)
   at com.openmarket.xcelerate.workflow.WorkflowEngine.getPotentialParticipants(y:1845)
   at com.openmarket.xcelerate.commands.WorkflowEngineDispatcher.GetPotentialParticipants(y:115)
   at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
   at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
   at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
   at java.lang.reflect.Method.invoke(Method.java:597)
   at com.openmarket.framework.commands.Dispatcher.Execute(y:136)
   at COM.FutureTense.XML.Template.bA.B(y:49)
...

Changes

Sites is configured with hybrid LDAP integration (users and ACLs in LDAP but roles and sites in the Sites database). 

Cause

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