下面属性属于系统内置占用属性，埋点时需要使用到该字段，您在创建自定义属性时，自定义属性的命名时请避开以下属性名称，否则自定义属性数据不会入库。
user_unique_id user_type device_id open_udid udid client_udid mc build_serial serial_number idfa is_upgrade_user web_id ip_addr_id ssid uuid idfv oaid cdid pgl_oaid origin_user_id origin_user_type headers app_id app_name app_package display_name access product_id product_name install_id caller custom trace_id client_port data_center app_key version_code sig_hash vendor_id vid traffic_type carrier_region device_brand device_manufacturer display_density density_dpi width height cpu_abi origin_app_id origin_app_name mcc_mnc os_api rom rom_version release_build manifest_version_code sim_serial_number is_jailbroken push_sdk push_os ab_group ab_feature ab_client ab_sdk_version not_request_sender user_agent gcm_available sdk_version_v2 pgl_oaid
headers app_install_id app_package ab_client traffic_type os_api log_type rnd tz carrier_region product_name product_id custom user_agent client_port data_center origin_app_id origin_app_name tracer_data harmony_os_api harmony_os_version harmony_release_type harmony_build_version harmony_major_version harmony_senior_version harmony_feature_version is_cheat seq_id event_id tea_event_index nt track_id time