How To Fix BRAIN_SUP021 - Variable &1[&2] cannot be replaced from &3[&4]

SAP Error Message - Details

• Message type: E = Error

• Message class: BRAIN_SUP - BRAIN messages (for use by support)

• Message number: 021

• Message text: Variable &1[&2] cannot be replaced from &3[&4]

What causes this issue?

The multi-variable &V1&[&V2&] ( "Multiple individual values")
should be replaced with the value of variable &V3&[ &V4&]. But &V4& is
a formula variable. Therefore the system
does not support this replacement.

System Response

Variable &V2& cannot be used.

How to fix this error?

Check the variables &V2& and &V4&.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message BRAIN_SUP021 - Variable &1[&2] cannot be replaced from &3[&4] ?

  The SAP error message BRAIN_SUP021 indicates that there is an issue with the replacement of a variable in a query or report. This error typically occurs in the context of SAP Business Intelligence (BI) or SAP BW (Business Warehouse) when working with variables in queries, especially in the context of BEx (Business Explorer) queries.
  Cause:
  The error message "Variable &1[&2] cannot be replaced from &3[&4]" usually arises due to one of the following reasons:
  
  
  Variable Scope: The variable you are trying to replace is not available in the context you are working in. This could be due to the variable being defined in a different query or context.
  
  
  Incorrect Variable Assignment: The variable might not be correctly assigned or defined in the query. This can happen if the variable is not properly linked to the data source or if there are inconsistencies in the variable settings.
  
  
  Data Source Issues: The data source from which you are trying to replace the variable may not contain the expected data or may not be compatible with the variable.
  
  
  Authorization Issues: There may be authorization restrictions preventing the variable from being accessed or replaced.
  
  
  Solution:
  To resolve the BRAIN_SUP021 error, you can take the following steps:
  
  
  Check Variable Definition: Ensure that the variable is correctly defined in the query. Go to the query designer and verify the variable settings, including its properties and the data source it is linked to.
  
  
  Review Query Context: Make sure that the variable is being used in the correct context. If the variable is defined in a different query or context, you may need to adjust your query to include the variable correctly.
  
  
  Validate Data Source: Check the data source to ensure it is correctly set up and contains the necessary data. If there are issues with the data source, resolve them before attempting to run the query again.
  
  
  Check Authorizations: Verify that you have the necessary authorizations to access the variable and the data source. If there are restrictions, contact your system administrator to adjust your permissions.
  
  
  Test with Different Variables: If possible, try using a different variable to see if the issue persists. This can help determine if the problem is specific to the variable in question.
  
  
  Consult Documentation: Refer to SAP documentation or support resources for additional guidance on variable handling in queries.
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found.
  BEx Query Designer: Familiarize yourself with the BEx Query Designer, as it provides tools for managing variables and queries effectively.
  
  By following these steps, you should be able to identify and resolve the issue causing the BRAIN_SUP021 error in your SAP environment.