Terminating a sub-process in LiveCycle ES (8.x) stalls the sub-process’s parent action with the following message:
2010-04-23 10:55:21,884 ERROR [com.adobe.workflow.AWS] stalling action-instance: 328 with message: Stalling action since child process is terminated
This happens even if the parent action is already complete. The expected behavior is that the parent action would not be stalled and this is how it worked in LC7.
This issue has been addressed in LiveCycle ES2 SP2 and later verions. There is a patch available for this issue for LC ES 18.104.22.168, so contact enterprise support should you require this patch.