Possible values for TRANSATTRIBUTE are:

NotSupported:Bean cannot be involved in a transaction. If the CLIENT has started a transaction, the EXISTING transaction is suspended until the bean's method has COMPLETED.

Required :Bean MUST always run within a transaction

Supports :If the client has started a transaction, the bean joins the transaction.

RequiresNew:Bean always starts a new transaction.

Mandatory:The client must start a transaction when the bean is invoked.

NEVER :If the client has started a transaction, the bean throws an exception. 

Possible values for TRANSATTRIBUTE are:

NotSupported:Bean cannot be involved in a transaction. If the client has started a transaction, the existing transaction is suspended until the bean's method has completed.

Required :Bean must always run within a transaction

Supports :If the client has started a transaction, the bean joins the transaction.

RequiresNew:Bean always starts a new transaction.

Mandatory:The client must start a transaction when the bean is invoked.

Never :If the client has started a transaction, the bean throws an exception.