https://devzone.nordicsemi.com/f/nordic-q-a/73438/error-4-nrf_error_no_memhello, i am using nrf52840 in our customised board and i am getting this error while debugging the application 4&lt;debug&gt; nrf_sdh_ble: RAM starts at 0x20004230 &lt;error&gt; app: ERROR 4 [NRF_ERROR_NO_MEM] at G:\NRF_CODE_to prajual\nrf52840_15.2_deca\nRF5_SDK_15en-USTelligent Community 13Wed, 31 Mar 2021 11:58:29 GMThttps://devzone.nordicsemi.com/thread/302719?ContentTypeID=1Wed, 31 Mar 2021 11:58:29 GMT137ad170-7792-4731-bb38-c0d22fbe4515:4743f844-f02c-48c4-9f3a-85cab5a58c5dVidar Berg<p>Hello,</p> <p>Have you adjusted the NRF_SDH_BLE_VS_UUID_COUNT in your sdk_config file? The UUID count must match the number of 128 byte base UUIDs used by your application. The LBS service adds one.</p> <p>Best regards,</p> <p>Vidar</p><div style="clear:both;"></div>