Displaying a Short Dump Directly 
In a runtime error occurs in a dialog process, the system immediately displays a screen with the Long Text (the formatted short dump in list format).
The long text already contains enough information to solve the problem.
For further checks you can then branch directly to the ABAP Debugger.
You can jump directly to the ABAP Debugger from the short dump display. To do this, choose Debugger.
The complete range of functions of the ABAP Debugger is available here. You can analyze the current status of the canceled program and its data objects.
The use that you logged on to the AS ABAP with should have debugging rights.
This function is no longer offered if you explore the short dump later in the transaction ST22.