How To Fix COM_PME_PARSER136 - Attribute variable &2 (facet &1) is declared but not used

SAP Error Message - Details

• Message type: E = Error

• Message class: COM_PME_PARSER - Configuration

• Message number: 136

• Message text: Attribute variable &2 (facet &1) is declared but not used

What causes this issue?

If you define variables that are not used in a constraint or rule, the
variables are saved, but you see a warning message.
The variable for the attribute facet pair (for example, DOMAIN COLOR)
of an object is declared in the OBJECTS section, but is not used again:
OBJECTS:
?x is_a (300)printer
where ?dc = domain color

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message COM_PME_PARSER136 - Attribute variable &2 (facet &1) is declared but not used ?

  The SAP error message COM_PME_PARSER136 indicates that there is an attribute variable declared in your code (specifically in a facet) that is not being used anywhere in the implementation. This is a common warning in SAP development environments, particularly when working with ABAP or similar programming languages.
  Cause:
  The error occurs when:
  
  An attribute variable is defined in a class or interface but is not referenced or utilized in any method or function within that class or interface.
  This can happen due to oversight during development, such as forgetting to use the variable, or it may be a remnant from previous code that was modified or refactored.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Review the Code: Check the class or interface where the attribute variable is declared. Look for the variable named in the error message and see if it is indeed not being used.
  
  
  Remove Unused Variables: If the variable is not needed, you can safely remove its declaration from the code. This is the best practice as it helps keep the code clean and maintainable.
  
  
  Utilize the Variable: If the variable is intended to be used but is currently not referenced, you should implement the necessary logic to use it in your methods or functions.
  
  
  Commenting: If you are unsure about removing the variable, you can comment it out temporarily to see if it affects the functionality of your program. If everything works fine without it, you can proceed to delete it.
  
  
  Documentation: If the variable is part of a larger design or future implementation, consider adding comments to explain its purpose, so that other developers (or you in the future) understand why it exists.
  
  
  Related Information:
  
  Code Quality: Keeping your code free of unused variables is important for maintaining code quality and readability. Tools like static code analyzers can help identify such issues.
  Performance: While unused variables may not significantly impact performance, they can lead to confusion and increase the cognitive load for developers working on the codebase.
  SAP Development Guidelines: Familiarize yourself with SAP's best practices and coding standards, which often emphasize the importance of clean and efficient code.
  
  By addressing the issue of unused attribute variables, you can improve the overall quality and maintainability of your SAP code.