KNOWLEDGE BASE

Error: "TableauException: union: Type mismatch" When Opening a Recently Published Workbook


Published: 04 Oct 2016
Last Modified Date: 07 Jul 2017

Issue

After opening a workbook for the first time since the workbook was published, each user encounters the following error once

TableauException: union: Type mismatch​

Environment

  • Tableau Server 9.3.5, 9.1.2
  • Windows Server 2012
  • Netezza

Cause

This behavior is related to a known defect (ID: 538467) that has been fixed in recent releases of Tableau Server.
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