https://devzone.nordicsemi.com/f/nordic-q-a/56486/adding-extra-notification-attributes-in-ancsHi, team I am using nRF5_SDK_15.3.0_59ac345/examples/ble_peripheral/ble_app_ancs_c sample application. and i wnated to add extra notification attribute. added BLE_ANCS_KEY1 in this Enum ble_ancs_c_notif_attr_id_val_t. /**@brief IDs for iOS notificationen-USTelligent Community 13Tue, 14 Jan 2020 13:21:32 GMThttps://devzone.nordicsemi.com/thread/229048?ContentTypeID=1Tue, 14 Jan 2020 13:21:32 GMT137ad170-7792-4731-bb38-c0d22fbe4515:ffaf3c95-cdba-4e8a-bdc1-d7a591739ee9Vidar Berg<p>Hi,</p> <p>ANCS has defined several attribute IDs. (See&nbsp;<a href="https://developer.apple.com/library/archive/documentation/CoreBluetooth/Reference/AppleNotificationCenterServiceSpecification/Appendix/Appendix.html#//apple_ref/doc/uid/TP40013460-CH3-SW3">https://developer.apple.com/library/archive/documentation/CoreBluetooth/Reference/AppleNotificationCenterServiceSpecification/Appendix/Appendix.html#//apple_ref/doc/uid/TP40013460-CH3-SW3</a> )</p> <p>I don&#39;t see any definition of how push notifications from APN are translated to ANCS by iOS, and the link above defines anything outside the listed attributes as &quot;reserved&quot;.&nbsp; Do you know if ANCS is supposed to support this use case? I.e., include additional fields such as the KEY value?</p><div style="clear:both;"></div>