I am trying to get journey history using journeyhistory end points

我正在尝试使用旅行历史终点来获取旅行历史

https://{{TenantId}}.rest.marketingcloudapis.com/interaction/v1/interactions/journeyHistory/search?$page=10&$pageSize=1000&$orderBy=TransactionTime%20desc

The problem i have,

我的问题是，

1. I don't know how many records exist. The response message does not contact the "MoreDataAvailable" sort of indicator, so i don't from the response of first request , if more data is pending

how can i be sure if i get all data

我如何确定我是否获得了所有数据

1. response message always has contact key as

   
   

   "contactKey": "Contact Unknown",
   

   
   

   Thus i dont know what i am doing wrong. This value is for all 10000 record. i can expect this values if contact is deleted but not for all

   
   

I was expecting some sort of indicator which tell me if more data is available or not. Also value for contact key

我期待着某种指示器，它告诉我是否有更多的数据可用。另请参阅联系人键的值

I had the same issue with "contactKey": "Contact Unknown",

我也遇到了同样的问题：“联系人未知”，

I think when we use the API /interaction/v1/interactions/journeyHistory for the first time, something is not ready.

我认为，当我们第一次使用/Interaction/v1/Interaction/JourneyHistory接口时，有些事情还没有准备好。

After a few hours, I did exactly that again and ContactKey starts populating

几个小时后，我又这样做了一次，ContactKey开始填充