# Managing data ingestion

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This page was generated from content adapted from the [AWS Developer Guide](https://github.com/awsdocs/aws-iot-sitewise-user-guide.git)
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## Managing data streams

* **Note**\
  An asset property can't be associated with multiple data streams at the same time.
* **Note**\
  If you're new to AWS IoT SiteWise after November 24, 2021, you can skip this section.
* **Important**\
  Before you ingest data to a data stream, do the following.\
  The `timeseries` resource must be authorized if you use a property alias to identify the data stream. The `asset` resource must be authorized if you use an asset ID to identify the asset that contains the associated asset property.


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