URL of the MPF server that owns the transaction. Used to enlist
new transactions whenever remote MPF servers process a request
(hence the "tip," or "Transaction Internet Protocol," in "tipUrl").
In distributed processing environments, MPF generates a
tipUrl attribute to link the transaction to the server that
originally received the request. The tipUrl also preserves
the MPF transaction ID as the request travels between servers. By
default, an MPF server assumes that a request comes directly from
the client and assigns a new ID. The tipUrl attribute
prevents remote servers from doing this erroneously. MPF
automatically generates the tipURL attribute for remote
requests, so do not include it in requests.
ID that the receiving MPF server generates and assigns to the
request. Used only for MPF internal processing and logging. Do not
include this attribute in requests; if this value is passed in, MPF
will override it.