Copy Data to Lakehouse - Edit Columns

Hello ringovski 

If your column header having spaces, your lakehosue won't allow to ,load the csv file into destination. You can read this blog Optimizing CSV Ingestion: Transforming Space-Delim... - Microsoft Fabric Community It might help you to resolve your problem

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Hi ringovski ,

Thank you for reaching out to the Microsoft Fabric Community and providing the details.

After reviewing your setup and the conversation, I can confirm that suparnababu8  gave the right advice. The issue happens because Lakehouse doesn’t support column names with spaces, which is why your pipeline fails.

The best way to fix this without rebuilding the whole pipeline  is to add a Dataflow Gen2 activity before the Copy Data activity. This lets you pull the data from SQL, rename columns to remove spaces (e.g., Customer Name to Customer_Name), and send the clean data to your Lakehouse. Once the columns are cleaned up in Dataflow Gen2, the Copy Data activity should work without errors.

You can find detailed steps on setting up Dataflow Gen2 here: Create your first Dataflow Gen2 in Microsoft Fabric.

I hope my suggestions give you good idea, if you need any further assistance, feel free to reach out.

If this post helps, then please give us Kudos and consider Accept it as a solution to help the other members find it more quickly.

Thank you.