GA4 Measurement Protocol问题：gtag+client_id+session_id无法在报表合并

我们已完成从UA到GA4的迁移，网站多数事件采用gtag.js追踪，购买事件使用Measurement Protocol发送。目前遇到两个关键问题：

• 该协议发送的购买事件在会话维度渠道分组报表中全部显示“未设置”
• 大量购买事件未关联client_id

我们已严格按照官方文档要求配置参数，经与其他分析师沟通，判断问题源于Measurement Protocol的使用逻辑，现请求协助解决该追踪问题。

测试请求代码 #

import json
import requests

url = "https://www.google-analytics.com//mp/collect?api_secret=API_Secrect&measurement_id=G-0000000000"
payload = {
  "client_id": "685297041.1666940000",
  "user_id": "#1234",
  "non_personalized_ads": 'false',
  "user_properties":{
    "cust_numb":{
      "value":"#1234"},
    "internal_user":{
      "value":"false"}},
  "events": [
    {
      "name": "purchase",
      "params": {
        "items": [
          {          
            "price": 3.35,
            "quantity": 1,
            "item_id": "#1062",
            "item_name": "White Fine Filters",
            "affiliation": "client.com",
            "currency": "USD",
            "discount": 0.5,
            "item_variant": "NA",
            "item_category": "Filters",
            "item_brand": "Generic",
            "index": 0,
            "item_category2": "One_Time",
            "item_category3": "simple_product",
            "item_category4": "full_price",
            "item_category5": "in stock"
          },
          {
            "price": 15.95,
            "quantity": 1,
            "item_id": "#1068",
            "item_name": "Black Filters for PR",
            "affiliation": "client.com",
            "currency": "USD",
            "discount": 5.8,
            "item_variant": "NA",
            "item_category": "Supplies/Filters/Sale 2021",
            "item_brand": "Generic",
            "index": 1,
            "item_category2": "one_time",
            "item_category3": "simple_product",
            "item_category4": "Discounted",
            "item_category5": "in_stock"
          }],
        "affiliation": "",
        "coupon": "ALL10",
        "currency": "USD",
        "transaction_id": "#2_02022",
        "shipping": 5,
        "tax": 0.35,
        "value": 15,
        "session_id": "1666947000",
        "timestamp_micros": "1666948174531000",
        "engagement_time_msec": "1000"
       }
    }
  ]
}

requests.post(url, data=json.dumps(payload))

补充说明 #

报表截图显示会话维度渠道分组字段全为“未设置”

我们已完成所有本地测试，同时有两个疑问：

• 是否有其他用户遇到过相同的Measurement Protocol追踪问题？
• 官方文档中提及的“仅部分报表可用”具体指代哪些报表范围？

内容的提问来源于stack exchange，提问作者José Carlos Almeida