How to Allow debugging on an Application Object Server instance

This option is set in the Microsoft Dynamics AX Server Configuration Utility
. 1. Open the Server Configuration utility (Start > Administrative Tools > Microsoft Dynamics AX Server Configuration).
 2. Verify that the currently selected AOS instance and configuration are the ones you want to modify.
 3. On the Application Object Server tab, click Enable breakpoints to debug X++ code running on this server, and then click OK