How To Fix CNV_PE189 - Interface 1 is not of type &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 189

• Message text: Interface 1 is not of type &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE189 - Interface 1 is not of type &1 ?

  The SAP error message CNV_PE189 typically indicates that there is a mismatch in the expected data type for a specific interface in a conversion or migration process. This error is often encountered during data migration activities, particularly when using SAP's data migration tools or during the execution of conversion programs.
  Cause:
  The error message "Interface 1 is not of type &1" suggests that the system is expecting a certain data type for the interface but is receiving a different type. This can occur due to several reasons:
  
  Data Type Mismatch: The data being processed does not match the expected data type defined in the interface.
  Configuration Issues: Incorrect configuration settings in the migration tool or interface definition.
  Data Format Issues: The data being imported may not be formatted correctly, leading to type mismatches.
  Version Compatibility: The version of the migration tool or the source system may not be compatible with the target system.
  
  Solution:
  To resolve the CNV_PE189 error, you can take the following steps:
  
  
  Check Data Types: Review the data types defined in the interface and ensure that the data being passed matches these types. This may involve checking the source data for inconsistencies.
  
  
  Review Configuration: Verify the configuration settings for the migration tool or interface. Ensure that all settings are correctly defined and that the interface is set up to handle the expected data types.
  
  
  Data Validation: Validate the data being imported to ensure it adheres to the expected formats and types. This may involve cleaning or transforming the data before migration.
  
  
  Consult Documentation: Refer to the SAP documentation for the specific migration tool or interface you are using. There may be specific guidelines or requirements that need to be followed.
  
  
  Check for Updates: Ensure that you are using the latest version of the migration tool and that all relevant patches have been applied. Sometimes, bugs in earlier versions can lead to such errors.
  
  
  Testing: If possible, conduct a test migration with a smaller dataset to identify if the issue persists. This can help isolate the problem.
  
  
  Seek Support: If the issue cannot be resolved through the above steps, consider reaching out to SAP support or consulting with an SAP expert who can provide more tailored assistance.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps.
  Migration Tools: Familiarize yourself with the specific migration tools being used (e.g., SAP S/4HANA Migration Cockpit, SAP Data Services) and their documentation.
  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 root cause of the CNV_PE189 error and implement a suitable solution.