https://devzone.nordicsemi.com/f/nordic-q-a/12167/bug-report-device-manager-connection-instanceI found a possible bug in device manager in SDK 8.1.0 for S120. If you set for example DEVICE_MANAGER_MAX_BONDS 2 and try to bond another device, you get &quot;No free connection instances available&quot; result from device manager. When you get that, err_codeen-USTelligent Community 13Tue, 01 Mar 2016 08:37:56 GMThttps://devzone.nordicsemi.com/thread/46047?ContentTypeID=1Tue, 01 Mar 2016 08:37:56 GMT137ad170-7792-4731-bb38-c0d22fbe4515:b65bf740-e104-4f5b-82bc-706eff70f731MC<p>No, DEVICE_MANAGER_MAX_CONNECTIONS was set to 2 in my case, because I wanted to test what would happen if another device wanted to bond. I still think you should get notified no matter what number of connection you set DEVICE_MANAGER_MAX_CONNECTIONS to. But if it was agreed not to notify, then it&#39;s fine. I just thought it was a bug. If it was done intentionally in understand.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/46046?ContentTypeID=1Tue, 01 Mar 2016 08:23:09 GMT137ad170-7792-4731-bb38-c0d22fbe4515:63dee88d-a6d9-4ca1-8bd2-c3a127cabed8Vidar Berg<p>Hi, is DEVICE_MANAGER_MAX_CONNECTIONS set to 8, which is the max. supported connections with s120? This assert should not occur unless max connections doesn&#39;t correspond with the softdevice specification. I assume this is why it was chosen to not notify the application of this event.</p><div style="clear:both;"></div>