Hi @Chendoran_M ,
Could you let us know what is the purpose of adding it to a New Datatable ?
We could use Read Range Activity and read the data as a Datatable, if the data is also required further for processing.
We could then Clone this Datatable to get the Schema/Column Names from it.
Another method would be to use Read Row Activity and get the Starting row/Header data from the Excel sheet as an Array.
Then loop through the array data using For Each Activity and use Add Data Column Activity to add column to the Datatable.