https://devzone.nordicsemi.com/f/nordic-q-a/102450/static-assertion-failed-error-with-custom-pcbHi, just testing out a custom PCB with nrf9160 on it. Have developed much on the nrf9160 dev kit and just about to port to our custom PCB. Created a custom board and just tried to build the &quot;hello world&quot; sample but I&#39;m getting lots of &quot;error: staticen-USTelligent Community 13Tue, 01 Aug 2023 12:39:00 GMThttps://devzone.nordicsemi.com/thread/439266?ContentTypeID=1Tue, 01 Aug 2023 12:39:00 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7b4197eb-2ecf-47c0-a9a9-6f170a8d6ffbDunKCubik<p>Think I&#39;ve solved the issue. Apparently building for TFM (Trusted firmware) is not enabled by default when creating a custom board!</p> <p>Managed to find a great post that explained this and how to add the configs to my custom board&#39;s defconfig file.</p> <p>Why are they not carried over by default, or at least a warning given rather than vague &quot;static assertion errors&quot;?!!</p> <p>I seem to waste so much time searching for answers to these issues when creating a custom board. Surely it should be documented officially somewhere (please prover me wrong if it is) It has taken 3 hours of my busy working day to solve this, when it should be simple!</p> <p></p> <p>Thanks to Raoul for this post...</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/93803/create-a-custom-board-with-the-build-in-create-a-new-board-wizard/395639">Create a custom board with the build-in Create a new board wizard. - Nordic Q&amp;A - Nordic DevZone - Nordic DevZone (nordicsemi.com)</a></p><div style="clear:both;"></div>