How To Fix AQ186 - A parameter with this name has already been defined

SAP Error Message - Details

• Message type: E = Error

• Message class: AQ - Message texts for SAP Query

• Message number: 186

• Message text: A parameter with this name has already been defined

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AQ186 - A parameter with this name has already been defined ?

  The SAP error message AQ186, which states "A parameter with this name has already been defined," typically occurs in the context of ABAP programming or when defining parameters in various SAP transactions. This error indicates that there is an attempt to define a parameter with a name that has already been used in the same scope, leading to a conflict.
  Cause:
  
  Duplicate Parameter Definition: The most common cause is that the same parameter name has been defined multiple times within the same program, function module, or method.
  Scope Issues: If the parameter is defined in a broader scope (like a global class or interface) and then again in a local context, it can lead to this error.
  Inclusion of Multiple Includes: If multiple includes are used in a program and they define the same parameter, this can also trigger the error.
  
  Solution:
  
  Check Parameter Definitions: Review the code to identify where the parameter is defined. Ensure that each parameter name is unique within its scope.
  Rename Parameters: If you find duplicate definitions, consider renaming one of the parameters to avoid the conflict.
  Use Unique Names: Adopt a naming convention that ensures uniqueness, especially in larger programs or when working with includes.
  Review Includes: If using includes, check all included files for duplicate parameter definitions and resolve any conflicts.
  Refactor Code: If the parameter is needed in multiple places, consider refactoring the code to use a single definition and pass the parameter as needed.
  
  Related Information:
  
  ABAP Development: This error is primarily encountered by ABAP developers. Understanding the scope of variables and parameters is crucial in ABAP programming.
  Debugging: Use the ABAP debugger to step through the code and identify where the parameter is being defined multiple times.
  Documentation: Refer to SAP documentation or community forums for best practices in parameter naming and scope management.
  
  By following these steps, you should be able to resolve the AQ186 error and prevent it from occurring in the future.