5.4.5 <beapolicy:Expires>
Specifies the amount of time after which the reliable Web service expires and does not accept any new sequence messages.
This element has a single attribute, Expires, whose data type is an XML Schema duration type. For example, if you want to set the expiration time to one day, use the following:
< beapolicy:Expires Expires="P1D" />
The default value never expires.
Parent topic: WS-RM Assertion Element Description