i need set Server Request Timeout property of Data Action, but i don't know how do it or whether it's possible

This action will inherit the default timeout defined in the module, the default value for the session time-out depends on the application server:

NET: 20 minutes and this value can be configured in machine.config file

J2EE: 60 minutes, can be configured in /etc/.java/.systemPrefs/outsystems/prefs.xml file.

Best regards ;)

Look in this menu of Service Studio:

Edit -> Preferences

I know this is an old thread, but the easiest way to set the server timeout of a data action would be to set the value directly in properties:

Or, if you want to set the default for all Data Actions, Aggregates and Server Actions of this application: