Error in sub transient work item 'Retirement with revenue' Message no.SWF_RUN817/ Error handling for work item 00001 Message no.SWF_RUN630

Hello All -  I am trying to do Mass retirement through AR01 and AR31. I have created Work list correctly and released it.

After releasing the Work list, I see the below 2 error messages in error log.

Except error message numbers, I am not getting any details. Can you pls help me out on this.

Error in sub transient work item 'Retirement with revenue' Message no.SWF_RUN817

Error handling for work item 00001 Message no.SWF_RUN630

Thanks