
From the Ruler in the ABAP Source-Code Editor
At Lines of Code
You can set breakpoints at lines of code just as you could in the old ABAP editor in the back end system.
At Entry of a Method
You can set a breakpoint at entry to a method.
A breakpoint stays with the line of code at which you set it. If you delete code above the breakpoint, it slides along with the relocated code.
Toggle a breakpoint again to delete it. You can also deactivate breakpoints, without deleting them.
You can display and manage Breakpoints view in the Debug View.