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Alteryx Designer Knowledge Base

Definitive answers from Designer experts.

Error: Parse Error at char(0): Empty expression (Expression #n)

Alteryx_KB
Alteryx
Alteryx
Created

Environment Details


 
Error: Parse Error at char(0): Empty expression (Expression #n)
 
  • Alteryx Designer
    • All versions
  • Formula Tool
  • Multi-Row Formula Tool
  • Multi-Field Formula Tool


Cause


The tool is attempting to execute a missing or empty formula.

Resolution


Breaking down the error message below in the Formula tool, Parse Error at char (0) tells you exactly where the issue is: remembering that Alteryx Designer is 0-based, the error occurs at the zeroth character, i.e. the very beginning of (Expression #1), which is empty in this case. 


The Multi-Row Formula tool also identifies the character position, and only uses one expression at a time, so it does not need to identify an expression number. 


To resolve, please enter a formula or function