How To Fix RX122 - The characteristic of an existing variable may not be changed

SAP Error Message - Details

• Message type: E = Error

• Message class: RX - BW: InfoCatalog

• Message number: 122

• Message text: The characteristic of an existing variable may not be changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RX122 - The characteristic of an existing variable may not be changed ?

  The SAP error message RX122, which states "The characteristic of an existing variable may not be changed," typically occurs in the context of SAP BW (Business Warehouse) or SAP BI (Business Intelligence) when you are trying to modify a variable that has already been defined and used in queries or reports.
  Cause:
  The error arises when you attempt to change the characteristics (such as the data type, length, or other properties) of a variable that is already in use. This is not allowed because it could lead to inconsistencies in reports or queries that rely on that variable.
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Usage: Identify where the variable is being used. You can do this by checking the queries, reports, or any other objects that reference the variable.
  
  
  Create a New Variable: Instead of modifying the existing variable, create a new variable with the desired characteristics. This is the safest approach to avoid breaking existing reports or queries.
  
  
  Update Queries/Reports: After creating the new variable, update any queries or reports that were using the old variable to use the new one instead.
  
  
  Delete or Deactivate the Old Variable: If the old variable is no longer needed, you can delete or deactivate it to avoid confusion in the future.
  
  
  Documentation: Document the changes made to ensure that other users are aware of the new variable and the reasons for the change.
  
  
  Related Information:
  
  Variable Types: Understand the different types of variables in SAP BW (e.g., selection variables, text variables) and their properties.
  Query Designer: Familiarize yourself with the Query Designer tool in SAP BW, as it is often used to create and manage variables.
  Transport Requests: If you are working in a development environment, ensure that any changes are properly transported to production using transport requests.
  SAP Notes: Check for any relevant SAP Notes or documentation that may provide additional insights or updates related to this error message.
  
  By following these steps, you should be able to resolve the RX122 error and manage your variables effectively in SAP BW.