nRF54L15 - Failed to copy derived key into KMUhttps://devzone.nordicsemi.com/f/nordic-q-a/125605/nrf54l15---failed-to-copy-derived-key-into-kmuHello, I am currently trying to use kmu to store a series of derived keys. My current systems derives AES keys and attempts to store it into KMU. As psa_key_derivation_output_key is currently not supported as a key storage method, my current plan is toen-USTelligent Community 13Fri, 14 Nov 2025 20:12:26 GMTRE: nRF54L15 - Failed to copy derived key into KMUhttps://devzone.nordicsemi.com/thread/554429?ContentTypeID=1Fri, 14 Nov 2025 20:12:26 GMT137ad170-7792-4731-bb38-c0d22fbe4515:2b64b2ae-ecf4-4477-8c4d-590f02092657AllanMM<p>Not sure why but the issue was solved once I made a separate psa_key_id_t object set as&nbsp;PSA_KEY_HANDLE_FROM_CRACEN_KMU_SLOT with the slot I desired. Using this new object as the id and output key id in derive_key then assigning the child key id as the slot id seemed to allow the system to run correctly.&nbsp;</p><div style="clear:both;"></div>