https://devzone.nordicsemi.com/f/nordic-q-a/10601/concurrent-scanning-and-advertising-problem-in-ble-connectionIn my application I have to advertise and scan, I know these two actions are multiplexed and there are no problems when there is no BLE connection (I use s130, sdk 9.0.0). However when I am connected to my smartphone and I want to change some characteristicen-USTelligent Community 13Fri, 04 Dec 2015 12:39:19 GMThttps://devzone.nordicsemi.com/thread/39461?ContentTypeID=1Fri, 04 Dec 2015 12:39:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:8b8b3de6-2140-400a-b83c-18b9bbe29838Anders Strand<p>Hi.</p> <p>I am not sure why you only encounter this error after initiating scanning. Can you post you code?</p> <p>The correct way to call the function without bonding will be:</p> <pre><code>err_code = sd_ble_gatts_sys_attr_set(m_conn_handle, NULL, 0, 0); </code></pre><div style="clear:both;"></div>