How do i check incoming OPC UA data

Question

Hi, in the last days I started to work with aws SiteWise. First, I deployed a gateway with 4 OPC UA sources. But now i have the problem, that my assets do not find their values.
My Question is now, how I can check my incoming data from the gateway, to find out the alias for the measurement. 
When i look at: AWS IoT SiteWise >Data streams, i see nothing. 
Another problem is: At aws the browse path is separated by a forward slash. But the structure for my NoteId look like that: 
ns=4;s=|var|WAGO 750-8207 PFC200 CS 2ETH RS 3G.Hochregllager.GVL_H.MANUELL
Here a Screenshot from the Server-Tree
[Server-Tree](https://ibb.co/ngtVBsm)
Did anyone know what the different between dot and forward slash mean ?
Some additional information

Sorry for the easy question, but I am truly a beginner in aws...

Accepted Answer

To allow AWS IoT SiteWise to ingest OPCUA messages, also when not associated with an Asset property, you need to enable this feature: [Manage Data Streams](https://docs.aws.amazon.com/iot-sitewise/latest/userguide/manage-data-streams.html#configure-data-ingestion-console)
Once done, you should see your data stream in the AWS IoT SiteWise >Data streams page

How do i check incoming OPC UA data

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