After upgrading to AEM 6.3, the Lock Payload Process [1] and Unlock Payload Process [2] workflow steps no longer work.
[1] com.day.cq.workflow.impl.process.LockProcess
[2] com.day.cq.workflow.impl.process.UnlockProcess
To apply configurations to allow the Lock/ Unlock processes to function in AEM 6.3, follow these steps: