https://devzone.nordicsemi.com/f/nordic-q-a/40861/cannot-debug-under-keil-vision-v5-25-2-0Hi, I encounter error when I debug the nrf52832 DK. I run the example code &quot;ble_app_uart&quot; provided in the SDK. Below error shown when I set the break point in any line of the code. *** error 35: undefined line number. My IDE is MDK-Lite Versionen-USTelligent Community 13Mon, 26 Nov 2018 09:03:34 GMThttps://devzone.nordicsemi.com/thread/158968?ContentTypeID=1Mon, 26 Nov 2018 09:03:34 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2c8f043c-c65e-40bb-98da-7fd862bd972bkonsang<p>Hi,&nbsp;</p> <p>I change to segger and every thing is working well.</p> <p></p> <p>Thanks</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/158907?ContentTypeID=1Sat, 24 Nov 2018 11:12:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:65b65cc1-dc57-4304-8edc-016d55ddc28bawneil<p>How are you trying to set the breakpoints - are you manually typing the &quot;BS&quot; command, or using the GUI?</p> <p>Note that the grey shading in the left margin indicates where code exists - you cannot set a breakpoint where no code exists!</p> <p>The errors in your screenshot relate to lines&nbsp; 700, 701, and 702 - but those lines are not visible in the screenshot.</p> <p></p> <p><a href="http://www.keil.com/forum/2627/uv2-debugger-error-35-undefined-line-number/">http://www.keil.com/forum/2627/uv2-debugger-error-35-undefined-line-number/</a></p> <p></p> <p>Have you enabled Debug Information in your Project?</p><div style="clear:both;"></div>