https://devzone.nordicsemi.com/f/nordic-q-a/104341/characteristics-of-dis-certification-questionHi Sir/Miss, Just confirm for certification, DIS has 9 characteristics. From DIS_SPEC, these don&#39;t mention which is mandatory in table. But, it describes in below text (Expose one or more of the characteristics). Therefore, if we don&#39;t wanten-USTelligent Community 13Thu, 05 Oct 2023 02:30:25 GMThttps://devzone.nordicsemi.com/thread/448911?ContentTypeID=1Thu, 05 Oct 2023 02:30:25 GMT137ad170-7792-4731-bb38-c0d22fbe4515:6cec7ef6-e7fb-453a-a128-fceeef12877eBen<p><span>We don&#39;t notice this, and your response is quite clear. </span></p> <p><span>Thank you so much.</span></p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/448816?ContentTypeID=1Wed, 04 Oct 2023 12:04:37 GMT137ad170-7792-4731-bb38-c0d22fbe4515:eabd1af7-9e8c-4542-a94a-17bcc2a67249Hung Bui<p>Hi Ben,&nbsp;<br />As you can find all of the characteristic are marked with O meaning they are Optional.&nbsp;</p> <p><img style="max-height:240px;max-width:320px;" src="https://devzone.nordicsemi.com/resized-image/__size/640x480/__key/communityserver-discussions-components-files/4/pastedimage1696421027031v1.png" alt=" " /></p> <p>Also you can find the line saying &quot;it is possible that none of the characteristics are included&quot;. So I don&#39;t see any problem if you don&#39;t include any characteristic in the DIS service. You should not have a problem doing certification doing so.&nbsp;</p><div style="clear:both;"></div>