== On PropertyLevel / BaseProperty ==
=== UTS ===
=== CTS ===
Save. the date and time when a property value is written the very first time.
=== ValidationTimeStamp ===
Saves the date and time when a value has been entered or validated on the client.
It is sufficient that an existing value is checked on the client. This can be for example by simply pressing an OK button.
== ProxyAttribute ==