How To Fix SAI_MAPPING121 - Error occurred during parameter evaluation in multi-mapping &1.&2

SAP Error Message - Details

• Message type: E = Error

• Message class: SAI_MAPPING - Mapping

• Message number: 121

• Message text: Error occurred during parameter evaluation in multi-mapping &1.&2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SAI_MAPPING121 - Error occurred during parameter evaluation in multi-mapping &1.&2 ?

  The SAP error message SAI_MAPPING121, which states "Error occurred during parameter evaluation in multi-mapping &1.&2," typically occurs in the context of SAP Process Integration (PI) or SAP Process Orchestration (PO) when there is an issue with the mapping of data between different systems or formats. This error is related to the evaluation of parameters in a mapping scenario, particularly in multi-mapping situations.
  Causes:
  
  Incorrect Mapping Configuration: The mapping configuration may have errors, such as incorrect field mappings or missing parameters.
  Data Type Mismatch: The data types of the source and target fields may not match, leading to evaluation errors.
  Missing or Incorrect Parameters: Required parameters for the mapping may be missing or incorrectly defined.
  Script Errors: If you are using graphical mapping or XSLT, there may be errors in the mapping logic or scripts.
  Runtime Issues: There could be issues at runtime, such as null values or unexpected data formats that the mapping cannot handle.
  
  Solutions:
  
  Check Mapping Configuration: Review the mapping configuration in the Integration Directory or the mapping tool to ensure that all fields are correctly mapped and that there are no missing parameters.
  Validate Data Types: Ensure that the data types of the source and target fields are compatible. If necessary, use conversion functions in the mapping to handle data type differences.
  Review Parameters: Check that all required parameters are defined and correctly referenced in the mapping. Ensure that they are being passed correctly from the source to the target.
  Debug Mapping Logic: If you are using graphical mapping or scripts, debug the mapping logic to identify any errors. Use the mapping test tool to simulate the mapping and see where it fails.
  Check for Null Values: Ensure that the data being processed does not contain unexpected null values or formats that could cause the mapping to fail.
  Consult Logs: Review the logs in the SAP PI/PO system for more detailed error messages that can provide insights into what went wrong during the mapping process.
  
  Related Information:
  
  SAP Notes: Check SAP Notes related to SAI_MAPPING121 for any specific patches or updates that may address known issues.
  Documentation: Refer to the SAP Help Portal for documentation on mapping in SAP PI/PO, which may provide additional insights and best practices.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify and resolve the cause of the SAI_MAPPING121 error in your SAP environment.