Regenerate Table Structure

Hello, I continuously regenerate the structure for my app and still receive this error. What am I doing wrong?

Thank you.

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I did something like this: I just delete the table and re-Add since it was still on early revision of the app.

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Delete all unused columns in the spreadsheet. Don’t just clear them, delete them. Then regenerate.

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Likely what happened was a cell in an otherwise unused column had a spurious value or formula that wasn’t readily visible. AppSheet saw the cell content and took it to mean the column was to be a part of the table.

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