17.6.2.1 NotSupported
The Container invokes an enterprise Bean method whose transaction attribute is set to NotSupported with an unspecified transaction context.
If a client calls with a transaction context, the container suspends the association of the transaction context with the current thread before invoking the enterprise bean's business method. The container resumes the suspended association when the business method has completed. The suspended transaction context of the client is not passed to the resource managers or other enterprise Bean objects that are invoked from the business method.
If the business method invokes other enterprise beans, the Container passes no transaction context with the invocation.
Refer to Subsection 17.6.5 for more details of how the Container can implement this case.