我的账号里有应用A和应用B,A对应PC端,B对应APP端

APP端启动的时候会发送这样一条请求到installations里,其中associatedUser里的objectId,是应用A里的_User的ObjectId,应用B并没有这个,请问为什么?

{
"requests": [{
"path": "\/1.1\/installations",
"method": "POST",
"body": {
"timeZone": "Asia\/Shanghai",
"badge": 0,
"channels": ["common"],
"deviceType": "ios",
"objectId": "552b4944e4b0f543685fff16",
"user_uuid": " ",
"__internalId": "552b4944e4b0f543685fff16",
"deviceToken": "893262ed3524300deeb5dcbd0fa838d42e9732c8e173d6437621a8842dfa6240",
"associatedUser": {
"__type": "Pointer",
"className": "_User",
"objectId": "552b4967e4b0c076505a2d12"
}
}
}]
}

POST /1.1/batch/save HTTP/1.1
Host: api.leancloud.cn
Accept: application/json
Proxy-Connection: keep-alive
X-avoscloud-Application-Production: 1
Accept-Language: zh-cn
X-avoscloud-Application-Id: xxxxxxxxxxxx
Accept-Encoding: gzip, deflate
Content-Type: application/json; charset=utf-8
Content-Length: 423
User-Agent: AVOS Cloud iOS-v3.1.3.1 SDK
Connection: keep-alive
x-avoscloud-request-sign: xxxxxxxd,1444706521610

{"requests":[{"path":"\/1.1\/installations","method":"POST","body":{"timeZone":"Asia\/Shanghai","badge":0,"channels":["common"],"deviceType":"ios","objectId":"552b4944e4b0f543685fff16","user_uuid":" ","internalId":"552b4944e4b0f543685fff16","deviceToken":"893262ed3524300deeb5dcbd0fa838d42e9732c8e173d6437621a8842dfa6240","associatedUser":{"type":"Pointer","className":"_User","objectId":"552b4967e4b0c076505a2d12"}}}]}