https://devzone.nordicsemi.com/f/nordic-q-a/78391/encrypted-data-in-gazell-acknowledgement-packetHi, I am working with nRF52833 using the SDK17 Dynamic Pairing example. I was able to expand on it for my use case, and the application is now correctly receiving data from the device to host. Can you provide an example of how to send back encrypteden-USTelligent Community 13Tue, 10 Aug 2021 11:22:11 GMThttps://devzone.nordicsemi.com/thread/324209?ContentTypeID=1Tue, 10 Aug 2021 11:22:11 GMT137ad170-7792-4731-bb38-c0d22fbe4515:7459faba-ffd3-4e44-9734-e898318d0003H&#229;kon Alseth<p>Hi,</p> <p>&nbsp;</p> <p>Unfortunately, this is not possible with GZP, when encrypting data.</p> <p>The ACK payload is reserved for the&nbsp;key update:</p> <p><a href="https://devzone.nordicsemi.com/f/nordic-q-a/10608/gazell-pairing-how-to-add-payload-to-the-acknowledgement/39530#39530">https://devzone.nordicsemi.com/f/nordic-q-a/10608/gazell-pairing-how-to-add-payload-to-the-acknowledgement/39530#39530</a></p> <p>&nbsp;</p> <p>Kind regards,</p> <p>Håkon</p><div style="clear:both;"></div>