Is it possible to write data into semantic model through rest api?

You can upload the entire semantic model, but not individual tables.

Note there is a slight variation to the theme when you work with push datasets.

Hi Gabry ,

Just as lbendlin says, we can write data into the tables of a semantic model through REST APIs.

The method for writing data into semantic model tables is through the Push Datasets API. You can read this document for a further study:  Push Datasets API 

However you may face some limitations and permissions, here you can read this two documents: Power BI REST APIs push semantic model limitations - Power BI | Microsoft Learn and Power BI REST APIs semantic model permissions - Power BI | Microsoft Learn

Best Regards

Yilong Zhou

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