https://devzone.nordicsemi.com/f/nordic-q-a/63316/required-characteristics-in-the-device-information-serviceFor certification purposes to qualify for the QDID defined by Nordic , are there any characteristics that are required to be present in the Device information Service (System ID, Manufacturer name, etc) ? The Device Information Service documentationen-USTelligent Community 13Mon, 06 Jul 2020 15:30:19 GMThttps://devzone.nordicsemi.com/thread/258662?ContentTypeID=1Mon, 06 Jul 2020 15:30:19 GMT137ad170-7792-4731-bb38-c0d22fbe4515:53ab9abf-d5f5-4271-ac9f-32843ddc8d06corentind<p>Hey, Thank you.</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258567?ContentTypeID=1Mon, 06 Jul 2020 10:17:21 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ab710791-d2c5-4913-907b-71f11835eae1Jared<p>Hey,</p> <p>They are optional, see the DIS description from BLE SIG <a href="https://www.bluetooth.org/docman/handlers/downloaddoc.ashx?doc_id=244369">here</a>&nbsp;on page 8.</p> <p>regards</p> <p>Jared</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258392?ContentTypeID=1Fri, 03 Jul 2020 16:20:38 GMT137ad170-7792-4731-bb38-c0d22fbe4515:928e8a0b-2892-489b-a873-313b4a4e6f4ecorentind<p>Thank you. I do not intend to modify it no.</p> <p>Regarding the characteristics in the DIS, are any of them required or they are all optionals? For example System ID or Manufacturer name?</p><div style="clear:both;"></div>https://devzone.nordicsemi.com/thread/258345?ContentTypeID=1Fri, 03 Jul 2020 13:35:49 GMT137ad170-7792-4731-bb38-c0d22fbe4515:26c246d5-ec5d-4e40-817e-4ed9275c48a4Jared[quote user=""]Does that mean the ble_dis.c file cannot be modified?[/quote] <p>&nbsp;Yes it shouldn&#39;t be modified. Is there a reason for why you would like to modify it?</p><div style="clear:both;"></div>