From the Object Designer
From the Microsoft Dynamics NAV Development Environment, select Table 270 Bank Account and click on the Design button to open the Table Designer window. Then press F9 or click on View, C/AL Code to open the C/AL Editor.
Place the cursor on one statement, a line of code, and press F9. A red bullet will appear on the left-hand side of the statement, as seen in the following screenshot. Press F9 again; the bullet is now a white bullet. Press F9 again and the bullet disappears; you have removed the breakpoint.
The red bullet indicates that a breakpoint is enabled for that statement. The debugger will stop when the program flow reaches that statement.
The white bullet indicates that a breakpoint was placed before, but it is now disabled. This means that the debugger will not stop on that statement.