How To Fix OQ_C221 - Generic variables must be the same for source and target parameters.

SAP Error Message - Details

• Message type: E = Error

• Message class: OQ_C - IS-Oil SSR : Message pool Fuels

• Message number: 221

• Message text: Generic variables must be the same for source and target parameters.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message OQ_C221 - Generic variables must be the same for source and target parameters. ?

  The SAP error message OQ_C221, which states "Generic variables must be the same for source and target parameters," typically occurs in the context of SAP's data transfer processes, particularly when dealing with data extraction or transformation in SAP BW (Business Warehouse) or similar environments.
  Cause:
  This error arises when there is a mismatch between the generic variables used in the source and target parameters of a data transfer process (DTP) or a query. Specifically, it indicates that the variables defined for the source data (e.g., in a query or InfoProvider) do not match those defined for the target data (e.g., in a DTP or data model). This can happen due to:
  
  Different Variable Names: The source and target may be using different variable names or types.
  Inconsistent Variable Definitions: The variables may have different definitions or characteristics (e.g., different data types, formats, or value ranges).
  Changes in Data Model: If there have been recent changes to the data model or InfoObjects, it may lead to inconsistencies in variable definitions.
  
  Solution:
  To resolve the OQ_C221 error, you can follow these steps:
  
  
  Check Variable Definitions:
  
  Go to the source and target definitions in the SAP BW system.
  Ensure that the variables used in both the source and target are identical in terms of name, type, and characteristics.
  
  
  
  Align Variable Names:
  
  If the variable names are different, consider renaming them to match each other.
  Ensure that any generic variables (e.g., variables that can take multiple values) are consistently defined.
  
  
  
  Review Data Transfer Process (DTP):
  
  Open the DTP that is causing the error and check the source and target settings.
  Make sure that the source and target InfoProviders are compatible and that the mappings are correctly set up.
  
  
  
  Test the Query:
  
  If the error occurs during query execution, test the query with the same variables to ensure they are functioning correctly.
  Check if the query is using the correct InfoProvider and that the variables are properly defined.
  
  
  
  Consult Documentation:
  
  Review SAP documentation or notes related to the specific version of SAP BW you are using for any known issues or additional guidance.
  
  
  
  Debugging:
  
  If the issue persists, consider using the SAP debugging tools to trace the execution and identify where the mismatch occurs.
  
  
  
  Related Information:
  
  SAP Notes: Check SAP Notes for any specific fixes or updates related to this error message.
  SAP Community: Engage with the SAP Community forums for insights from other users who may have encountered similar issues.
  Training and Documentation: Familiarize yourself with SAP BW data modeling and variable handling through official SAP training materials or documentation.
  
  By following these steps, you should be able to identify and resolve the cause of the OQ_C221 error in your SAP environment.