Specifies the XPath expression or JMS property that contains the transaction indicator to be validated against beginval or other value that identifies the position within the transaction. All operations within a single message are regarded as occurring within a whole transaction if this property is not defined. Specifies the begin, middle and end of transactions. Any XPath expression must end with a value accessor such as @att or text(). Transactions defined in this way can span messages. This is an optional property.

oprule.txind={xpath_expression|$jms_property}

For example:

dynoprule.txind=@txind