Process not found

I have successfully add process in action chain from my user its works fine but getting error when another user trying to submit, is there any other way to assign roles other then swimlane

{    

"type": "vbcs://process_service_problem",    

"title": "Process Service Error",    

"detail": "Process Alias ,yProcess could not be found.",    

"status": 500,    

"o:errorCode": "processAliasNotFound"

}