How To Fix WER400 - ***** 400 - 419: Expression comparison ********************************

SAP Error Message - Details

• Message type: E = Error

• Message class: WER - Messages for the package WER

• Message number: 400

• Message text: ***** 400 - 419: Expression comparison ********************************

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

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 WER400 - ***** 400 - 419: Expression comparison ******************************** ?

  The SAP error message **WER400 *** 400 - 419: Expression comparison typically relates to issues encountered during expression evaluation or comparison in SAP workflows, ABAP programs, or configuration where expressions or conditions are used.
  
  Cause
  
  Syntax or semantic errors in expressions: The error often occurs when an expression used in a workflow condition, rule, or ABAP code is malformed or contains invalid syntax.
  Data type mismatches: Comparing incompatible data types (e.g., comparing a string to a number) can trigger this error.
  Missing or incorrect variables: The expression references variables or fields that are not declared, initialized, or available in the current context.
  Unsupported operators or functions: Using operators or functions not supported in the expression language or context.
  Runtime evaluation errors: Division by zero, null values, or other runtime exceptions during expression evaluation.
  
  
  Solution
  
  
  Check the expression syntax:
  
  Review the expression carefully for syntax errors.
  Ensure all operators and functions are used correctly.
  Use SAP tools or transaction codes (e.g., SWI1