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Alteryx Designer Knowledge Base

Definitive answers from Designer experts.

Error: You must specify a sheet name


Environment Details

  • Alteryx Designer
    • All versions
  • Output data tool


When writing out a new spreadsheet, the file name does not contain a sheet name.


Update the filename to include a sheet name. For example, append the sheet name using three pipe characters (|||) as the delimiter; or try reselecting the file in the Write to File or Database drop down, and it can prompt a sheet name option (in the second image below). For more information, see the Output Data help page.