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Mackie's avatar
Mackie
Icon for Helper I rankHelper I
5 years ago
Solved

Cannot add a new column

I clicked "New Column" button but Power BI desktop shows an error dialog saying the next sentence immediately.

 

Error Message:
Failed to save modifications to the server. Error returned: 'The Column with the name of 'Column' already exists in the 'TestTable' Table.

 

How do I add a new column?

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  • Mackie's avatar
    Mackie
    5 years ago

    To avoid this error, I deleted the entire table and recreated a new table.

4 Replies

    • Mackie's avatar
      Mackie
      Icon for Helper I rankHelper I
      5 years ago

      But Power BI does not give a enough time to change column name.

      It immediately shows the error dialog right after I clicked the "New column" button.

      • Mackie's avatar
        Mackie
        Icon for Helper I rankHelper I
        5 years ago

        To avoid this error, I deleted the entire table and recreated a new table.

  • Shahfaisal's avatar
    Shahfaisal
    Icon for Solution Sage rankSolution Sage
    5 years ago

    The issue is with the name you provided for the new column as there is already an existing column with that exact name in the table. Please choose a different name for the new column.