How To Fix CNV_MBT344 - Function call &1 error

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_MBT - PCL message class

• Message number: 344

• Message text: Function call &1 error

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_MBT344 - Function call &1 error ?

  The SAP error message CNV_MBT344, which indicates "Function call &1 error," is typically associated with issues in the data migration process, particularly when using the SAP S/4HANA Migration Cockpit or other data migration tools. This error can arise due to various reasons, including incorrect configurations, data inconsistencies, or issues with the function modules being called during the migration process.
  Causes:
  
  Function Module Issues: The function module being called may not exist, may be incorrectly implemented, or may have been deactivated.
  Data Inconsistencies: The data being processed may not meet the expected format or constraints, leading to errors during function execution.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to call the function module.
  Configuration Errors: Incorrect settings in the migration cockpit or related configuration may lead to this error.
  System Performance: Performance issues or timeouts during the execution of the function can also trigger this error.
  
  Solutions:
  
  Check Function Module: Verify that the function module referenced in the error message exists and is active. You can do this by using transaction SE37 or SE80 to check the function module.
  Review Data: Ensure that the data being migrated is clean and adheres to the expected formats and constraints. Look for any inconsistencies or invalid entries.
  Authorization Check: Ensure that the user executing the migration has the necessary authorizations to call the function module. You may need to consult with your security team to verify this.
  Configuration Review: Review the configuration settings in the migration cockpit to ensure they are set up correctly. Check for any missing or incorrect parameters.
  System Logs: Check the system logs (transaction SLG1) for more detailed error messages that may provide additional context about the failure.
  Performance Monitoring: Monitor system performance to ensure that there are no bottlenecks or timeouts occurring during the migration process.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional troubleshooting steps. You can search for notes related to CNV_MBT344 in the SAP Support Portal.
  Documentation: Review the official SAP documentation for the migration tools you are using, as they may provide insights into common issues and best practices.
  Community Forums: Consider reaching out to SAP Community forums or other user groups where similar issues may have been discussed.
  
  If the issue persists after trying the above solutions, it may be beneficial to engage SAP support for further assistance, providing them with detailed information about the error and the context in which it occurred.