How To Fix W8064 - Conversion error while evaluating expression

W8064 - Overview

• Message type: E = Error

• Message class: W8 - Workflow: Expressions, data flow

• Message number: 064

• Message text: Conversion error while evaluating expression

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message W8064 - Conversion error while evaluating expression ?

  SAP Error Message:
  W8064 - Conversion error while evaluating expression
  
  
  Cause:
  The error W8064 typically occurs when SAP tries to evaluate an expression (often in a condition, formula, or calculation) and encounters a data type mismatch or an invalid conversion. This means that the system expected a certain data type (e.g., numeric, date, or character), but the actual data or expression provided cannot be converted or interpreted correctly.
  Common scenarios causing this error include:
  
  Attempting to perform arithmetic operations on non-numeric fields.
  Using incompatible data types in logical or mathematical expressions.
  Incorrect formatting of date or time fields.
  Expressions referencing fields or variables that contain unexpected or invalid values.
  Concatenation or comparison of fields with incompatible types.
  
  
  
  Solution:
  To resolve the W8064 Conversion error, follow these steps:
  
  
  Check the Expression Syntax:
  
  Review the expression or formula causing the error.
  Ensure that all operands are of compatible data types.
  Verify that numeric operations are only performed on numeric fields.
  
  
  
  Validate Data Types:
  
  Confirm the data types of all