I found I could join with the BPM_run_step_action_results table on the AI_ID column. But I am looking for a resolution of "approved" or "rejected". It looks like the table bpm_run_assignees has what I am looking for in the AI_STATUS_CODE
What about BPM_RUN_PROCESS_ENGINE_RUNS?
Some columns seems to have interesting information for troubleshooting but I don't know how to interpret this information.
Start a new question on this. It will get more attention.