The Echo Argument
Oracle CRM On Demand Web services using the methods Insert, Update, InsertOrUpdate, Delete, InsertChild, UpdateChild, and DeleteChild can specify an Echo input argument; for example:
<Echo>Off</Echo>
The Echo value is case-sensitive and is used to indicate
whether a Web services transaction is to trigger the creation of an integration
event (assuming that a workflow and integration event action have been
configured to capture that particular transaction type). The default
value of Echo is On, therefore when this parameter is
provided in the request with a value of On, or is not
included in the request, the integration event action is triggered and
the transaction is recorded. When the Echo parameter is included with
a value of Off, the transaction is not recorded.