Facing issue : Caused by: javax.naming.NameNotFoundException: Name [jboss/TransactionManager] is not bound in this Context. Unable to find [jboss]

We have to run Jbpm on Tomcat.

Followed the instruction which are mentioned on :

https://access.redhat.com/documentation/en-US/Red_Hat_JBoss_BPM_Suite/6.3/html/Installation_Guide/sect_the_generic_deployable_bundle_installation.html#sect_installing_the_generic_deployable_package

in Perstistnce Descripter UI, there was available java:jboss/datasources/ExampleDS and application was throwing javax.naming.NameNotFoundException:
java:jboss/datasources/ExampleDS when doing Build and Deploy a process .

So we changed with existing JNDI java:comp/env/jdbc/jbpm

We are able to create process but when try to build and deploy process , application throwing below error :

Caused by: javax.naming.NameNotFoundException: Name [jboss/TransactionManager] is not bound in this Context. Unable to find [jboss].
at org.apache.naming.NamingContext.lookup(NamingContext.java:818)
at org.apache.naming.NamingContext.lookup(NamingContext.java:152)
at org.apache.naming.SelectorContext.lookup(SelectorContext.java:134)
at javax.naming.InitialContext.lookup(InitialContext.java:421)
at org.hibernate.service.jndi.internal.JndiServiceImpl.locate(JndiServiceImpl.java:65)
... 78 more

Can you please help me to resolve this issue?