https://devzone.nordicsemi.com/f/nordic-q-a/35137/52832-ble_app_multilink_central-max-links-helpHi,everyone. I had learn for below Links and compiling is no error. https://devzone.nordicsemi.com/f/nordic-q-a/26448/nrf52832-maximum-number-of-central-links/104063#104063 and change 8 to 20 like: // &lt;o&gt; NRF_SDH_BLE_CENTRAL_LINK_COUNT - Maximumen-USTelligent Community 13Fri, 08 Jun 2018 01:36:16 GMThttps://devzone.nordicsemi.com/thread/135271?ContentTypeID=1Fri, 08 Jun 2018 01:36:16 GMT137ad170-7792-4731-bb38-c0d22fbe4515:1a10cb38-caf7-44ce-80c8-186f6e9a16f6Jim_huan<p>thank you! now I make it work!</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/135235?ContentTypeID=1Thu, 07 Jun 2018 16:02:44 GMT137ad170-7792-4731-bb38-c0d22fbe4515:21f882c8-4bc7-48b8-a129-e6b48def85adHung Bui<p>Why do you have&nbsp;NRF_SDH_BLE_CENTRAL_LINK_COUNT = 20 but&nbsp;NRF_SDH_BLE_TOTAL_LINK_COUNT = 8 ?&nbsp;</p> <p>If you your device reset, could you check why it reset ? There is an useful link here on <a href="https://devzone.nordicsemi.com/question/60125/my-device-is-freezing-and-restarting/#60126">how to debug.&nbsp;</a>&nbsp;</p><div style="clear:both;"></div>