Hello,
For this purpose, you can use PowerShell scripts. Using the $Context.LogMessage in scripts run as a part of a Business Rule, you can add a message to the Execution Log. The Execution Log will be shown to users when the operation that triggered your Business Rule completes. The first parameter of the method is the text of the message; the second parameter is the type of the message. The second parameter can take the following values: "Information", "Warning", and "Error". Examples:
$Context.LogMessage("Some message", "Information")
$Context.LogMessage("Some warning", "Warning")
$Context.LogMessage("Some error", "Error")
When the operation completes, this will look approximately like this in the Web Interface:
To run a script as a part of a Business Rule, add the Run a program or PowerShell script action to the rule.