In SharePoint multi-server farm I updated the farm account password and run the below command from one app server where central admin site running when I try to run this command from another app server wfe server I got the below error
stsadm -o updatefarmcredentials -userlogin domain\account -password password
An update conflict has occurred, and you must re-try this action. The object SPE ncryptedString Name=-4e8a-af3a-bf49012fccab was updated by xxxxx/xxx, in the STSADM (4276) process, on machine AP01. View the tracing log for more information about the conflict.