How To Fix FDT_EXPRESSIONS629 - Parameter name &1 already exists, choose a different name

SAP Error Message - Details

• Message type: E = Error

• Message class: FDT_EXPRESSIONS - Formula & Derivation Tool: Expressions

• Message number: 629

• Message text: Parameter name &1 already exists, choose a different name

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message FDT_EXPRESSIONS629 - Parameter name &1 already exists, choose a different name ?

  The SAP error message FDT_EXPRESSIONS629 indicates that there is a naming conflict in the context of expressions or variables within the SAP system. Specifically, it means that the parameter name you are trying to use already exists in the system, and you need to choose a different name to avoid this conflict.
  Cause:
  
  Duplicate Parameter Name: The most common cause of this error is that you are trying to create a new parameter or variable with a name that is already in use within the same context (e.g., within the same function, expression, or data object).
  Scope Issues: The parameter name might exist in a broader scope, such as a global context, which is causing the conflict.
  Typographical Error: Sometimes, a simple typographical error can lead to the perception that a name is unique when it is not.
  
  Solution:
  
  Rename the Parameter: The simplest solution is to choose a different name for the parameter that does not conflict with existing names. Ensure that the new name is unique within the relevant scope.
  Check Existing Parameters: Review the existing parameters in the context where you are trying to create the new one. This can often be done through the SAP GUI or the relevant development environment.
  Use Naming Conventions: Implement a consistent naming convention that helps avoid conflicts. For example, prefixing parameter names with a specific identifier related to their function or context can help maintain uniqueness.
  Consult Documentation: If you are unsure about the existing parameters, consult the relevant documentation or system help to understand the context better.
  
  Related Information:
  
  SAP FDT (Flexible Data Types): This error is often encountered in the context of SAP FDT, which allows for the creation and management of flexible data types and expressions.
  Development Environment: If you are working in a development environment (like ABAP Workbench), ensure that you are aware of the naming conventions and restrictions that apply.
  Testing: After renaming the parameter, test the changes to ensure that the new name does not cause any further issues and that the functionality remains intact.
  
  If the problem persists after trying these solutions, it may be helpful to consult with a colleague or reach out to SAP support for further assistance.