I use then interface https://developer.apple.com/documentation/devicemanagement/device_assignment/activation_lock_a_device/creating_and_using_bypass_codes#3734453 to remove Activation Lock。
request url：https://deviceservices-external.apple.com/deviceservicesworkers/escrowKeyUnlock?serial=***&productType=***&imei=***&meid=*** then body is escrowKey、orgName、guid
and use APNs certificate when establishing the SSL connection
but return me：<?xml version="1.0" encoding="UTF-8"?><ns:escrowKeyDeviceServicesResponse version="1" xmlns:ns="http://www.apple.com/cds/mdmescrowKeyDeviceServices/xml"><error code="1002" message="com.apple.cds.cyclops.mdm.MDMServiceException: No entry found for device xxxx:xxxx:xxxx"/></ns:escrowKeyDeviceServicesResponse>