https://devzone.nordicsemi.com/f/nordic-q-a/122711/matter-please-show-me-the-detailed-steps-to-add-diagnostic-logging-functionality-to-the-matter-sample-projectI&#39;m trying to add diagnostic logging functionality to my Matter project using SDK version v3.0.1. I followed the steps outlined here: ( https://docs.nordicsemi.com/bundle/ncs-latest/page/nrf/protocols/matter/getting_started/advanced_kconfigs.html#diagnostic_logsen-USTelligent Community 13Wed, 09 Jul 2025 14:11:20 GMThttps://devzone.nordicsemi.com/thread/541966?ContentTypeID=1Wed, 09 Jul 2025 14:11:20 GMT137ad170-7792-4731-bb38-c0d22fbe4515:5dd695f3-5930-4891-a0ac-943a35ddab54paper555<p><span>I&#39;m still encountering compilation errors even when following the method you provided. Could it be necessary to add certain compilation options to the build configuration?</span></p> <p><span><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1752070273164v1.png" alt=" " /></span></p> <p><span>Could you please provide a project code that compiles successfully for me to use as a complete reference? Thank you.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/541732?ContentTypeID=1Tue, 08 Jul 2025 08:03:50 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b0309730-9aea-4bd5-a402-624d0c05f573Priyanka<p>Hi,</p> <p><span>The reason is that copying configuration from snippet to .conf is not enough, as snippet does one more thing beside of that. It additionally includes dts overlay that configures retention sections: <a title="https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/snippet.yml#l20" href="https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/snippet.yml#L20" rel="noopener noreferrer" target="_blank">https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/snippet.yml#L20</a> (in particular this is what is missing according to the compilation error). Here is an overlay file that should be used for L15: <a title="https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/boards/nrf54l15dk_nrf54l15_cpuapp.overlay" href="https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/boards/nrf54l15dk_nrf54l15_cpuapp.overlay" rel="noopener noreferrer" target="_blank">https://github.com/nrfconnect/sdk-nrf/blob/main/snippets/matter-diagnostic-logs/boards/nrf54l15dk_nrf54l15_cpuapp.overlay</a></span></p> <p>Regards,</p> <p>Priyanka</p><div style="clear:both;"></div>