How To Fix CNV_PE789 - Access type &1 is not supported

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE - General messages for posting engine

• Message number: 789

• Message text: Access type &1 is not supported

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE789 - Access type &1 is not supported ?

  The SAP error message CNV_PE789 with the description "Access type &1 is not supported" typically occurs during data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error indicates that the specified access type (denoted by &1) is not recognized or supported by the system for the operation being performed.
  Causes:
  
  Unsupported Access Type: The access type specified in the migration or conversion process is not valid or not supported by the current version of the SAP system.
  Configuration Issues: There may be misconfigurations in the migration settings or parameters that lead to the system not recognizing the access type.
  Data Model Changes: If the data model has changed (for example, during an upgrade or migration to S/4HANA), certain access types may no longer be applicable.
  Custom Development: If there are custom developments or enhancements in the system, they may not align with the expected access types.
  
  Solutions:
  
  Check Access Type: Verify the access type being used in the migration process. Ensure that it is a valid and supported access type for the operation you are trying to perform.
  Review Migration Settings: Go through the migration settings and parameters to ensure they are correctly configured. Look for any discrepancies that might lead to unsupported access types.
  Consult Documentation: Refer to the official SAP documentation for the migration tool you are using. This documentation often includes a list of supported access types and any changes that may have occurred in recent versions.
  Update or Patch: Ensure that your SAP system is up to date with the latest patches and updates. Sometimes, issues like these are resolved in newer versions or patches.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide insights specific to your system configuration and the error message.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide guidance on supported access types.
  Migration Cockpit: Familiarize yourself with the SAP S/4HANA Migration Cockpit and its capabilities, as well as any limitations regarding access types.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues. They can provide practical solutions or workarounds.
  
  By following these steps, you should be able to identify the cause of the CNV_PE789 error and implement a suitable solution.