Thanks Maciej Swiderski for reply,
I am using the JBPM5.4 installer with default settings.
User properties files contains below entries
users.properties
admin=admin
krisv=krisv
john=john
mary=mary
sales-rep=sales-rep
Role properties file contains below entrries.
roles.properties
admin=admin,manager,user,webdesigner,functionalanalyst
krisv=admin,manager,user
john=admin,manager,user,PM
mary=admin,manager,user,HR
sales-rep=admin,manager,user,sales
I do not see any duplicates.Where should i have to check for "task service".