How To Fix UPF091 - Formula error: Variable name &1 is already declared

SAP Error Message - Details

• Message type: E = Error

• Message class: UPF - Planning Functions

• Message number: 091

• Message text: Formula error: Variable name &1 is already declared

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 UPF091 - Formula error: Variable name &1 is already declared ?

  The SAP error message UPF091, which states "Formula error: Variable name &1 is already declared," typically occurs in the context of SAP's formula processing, particularly when working with user-defined formulas in the SAP system. This error indicates that there is a naming conflict with a variable that has already been declared within the same formula or context.
  Cause:
  The primary cause of this error is that the variable name you are trying to declare in your formula has already been used earlier in the same formula or in the same scope. In SAP, each variable must have a unique name within its context to avoid ambiguity and ensure that the formula can be processed correctly.
  Solution:
  To resolve the UPF091 error, you can take the following steps:
  
  
  Check Variable Declarations: Review the formula where the error occurs and look for any variable declarations. Ensure that each variable name is unique within the formula.
  
  
  Rename Variables: If you find that a variable name is duplicated, rename one of the variables to a unique name that has not been used elsewhere in the formula.
  
  
  Review Scope: If the formula is part of a larger context (like a report or a function module), ensure that variable names do not conflict with other variables declared in that broader context.
  
  
  Test the Formula: After making changes, test the formula again to ensure that the error has been resolved.
  
  
  Documentation: If you are unsure about variable naming conventions or best practices, refer to SAP documentation or guidelines related to formula creation and variable management.
  
  
  Related Information:
  
  SAP Documentation: Check the official SAP Help Portal for detailed information on formula syntax and variable management.
  SAP Community: Engage with the SAP Community forums to see if others have encountered similar issues and how they resolved them.
  Debugging Tools: Use SAP debugging tools to step through the formula processing if necessary, which can help identify where the conflict arises.
  
  By following these steps, you should be able to resolve the UPF091 error and successfully implement your formula in SAP.