Business Process and Data Transformation Language Reference
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Store a message to acknowledge a step achieved by a business process.
<milestone value='"The applicant has been notified of the interest rate."' />
Attribute or Element Description Value
value attribute Required. This is the text for the milestone message. It can be a literal text string or an expression to be evaluated. A string of one or more characters. May be an expression or a literal string. If this is an expression, it must use the scripting language specified by the containing <process> element.
name, disabled, xpos, ypos, xend, yend attributes See Common Attributes and Elements.”  
<annotation> element
A <milestone> activity writes a message to the Ensemble database. <milestone> works very much like <trace>, but unlike <trace> messages, <milestone> messages exist only while the associated business process is running. After the business process exits, all messages generated by <milestone> activities are removed.
Often a programmer uses <trace> messages for diagnostic purposes, whereas <milestone> messages can be helpful to track the progress of a correctly operating, long-running business process.
You can retrieve <milestone> messages by examining values in the Ens.Milestone global. The global is defined only if your production has issued <milestone> messages. To obtain the value of Ens.Milestone: