After modifying the sheet name via Wed Editing and publish the workbook, the existing data driven alert cannot be edited with the following error.
Unexpected Error
An unexpected error occurred. If you continue to receive this error please contact your Tableau Server Administrator.
Session ID: A50B68C6FF7047A3B63678B6BB36A4DA-0:0
uncaught exception: Threshold Type.Data Type is not among the supported data types
Failing alerts are often caused by content changes on Tableau Server. Encourage users to recreate alerts if changes like the following occur:
001470815

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