How To Fix CNV_PE817 - Parameter &1 must not have type &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 817

• Message text: Parameter &1 must not have type &2

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE817 - Parameter &1 must not have type &2 ?

  The SAP error message CNV_PE817 indicates that a parameter in a conversion or migration process is being assigned a type that is not allowed. Specifically, the message states: "Parameter &1 must not have type &2," where &1 represents the parameter name and &2 represents the type that is causing the issue.
  Cause:
  This error typically arises during data migration or conversion processes, particularly when using SAP's tools for data transfer (like SAP S/4HANA Migration Cockpit or other conversion tools). The root causes can include:
  
  Incorrect Data Type Assignment: The parameter in question is being assigned a data type that is not compatible with the expected type for that parameter.
  Configuration Issues: There may be misconfigurations in the migration settings or mapping definitions.
  Data Model Changes: If the underlying data model has changed (for example, in a system upgrade), the expected types for certain parameters may have changed as well.
  
  Solution:
  To resolve the CNV_PE817 error, you can take the following steps:
  
  
  Check Parameter Definition: Review the definition of the parameter mentioned in the error message. Ensure that the data type assigned to it matches the expected type as per the migration or conversion documentation.
  
  
  Review Mapping Configuration: If you are using a mapping tool, check the mapping configuration to ensure that the data types are correctly defined and compatible with the target structure.
  
  
  Consult Documentation: Refer to the SAP documentation related to the specific migration or conversion process you are using. This may provide insights into the expected data types and any changes that may have occurred in recent versions.
  
  
  Adjust Data Types: If you have control over the data being migrated, ensure that the data types in your source data match the expected types in the target system.
  
  
  Test with Sample Data: If possible, run a test migration with a small set of data to isolate the issue and confirm that the changes you made resolve the error.
  
  
  Seek Support: If the issue persists, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance based on your specific scenario.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional context.
  Migration Tools: Familiarize yourself with the specific migration tools you are using, as they often have their own set of guidelines and best practices.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify the cause of the CNV_PE817 error and implement a suitable solution.