https://devzone.nordicsemi.com/f/nordic-q-a/43505/custom-service-for-nrf52-dkHi, I am having a trouble trying to make a custom service from SDK 15.0 ble peripheral template example. I have followed the tutorial from : https://devzone.nordicsemi.com/tutorials/b/bluetooth-low-energy/posts/ble-services-a-beginners-tutorial?CommentIden-USTelligent Community 13Mon, 11 Feb 2019 09:29:22 GMThttps://devzone.nordicsemi.com/thread/170294?ContentTypeID=1Mon, 11 Feb 2019 09:29:22 GMT137ad170-7792-4731-bb38-c0d22fbe4515:97582e35-d758-47f8-aa37-c16a333aab36Sigurd<p>Hi,</p> [quote userid="75230" url="~/f/nordic-q-a/43505/custom-service-for-nrf52-dk"]Could you help me find the problem? And what&#39;s the best method of debugging this kind of problem?&nbsp;[/quote] <p>A function has probably returned an error code, and you have entered the error-handler. To debug this, you should&nbsp;configure your SES to use the Debug configuration, and turn on logging. (Make sure NRF_LOG_ENABLED and NRF_LOG_BACKEND_RTT_ENABLED is set to 1 in sdk_config.h)</p> <p><img height="82" src="https://devzone.nordicsemi.com/resized-image/__size/320x240/__key/communityserver-discussions-components-files/4/pastedimage1549877338316v1.png" width="147" alt=" " /></p> <p></p> [quote userid="75230" url="~/f/nordic-q-a/43505/custom-service-for-nrf52-dk"]to make a custom service from SDK 15.0 ble peripheral template example.[/quote] <p>We have a tutorial that shows you how to do this. See <a href="https://github.com/NordicPlayground/nRF52-Bluetooth-Course">this link.</a></p><div style="clear:both;"></div>