How To Fix CNV_OM_PRESEL128 - Simulate selected tasks

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_PRESEL - Messages for LT Object Based Preselection

• Message number: 128

• Message text: Simulate selected tasks

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.

Unfortunately, there isn't any extra information in this error notice.

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Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_OM_PRESEL128 - Simulate selected tasks ?

  The SAP error message CNV_OM_PRESEL128 typically occurs during the simulation of selected tasks in the context of a data migration or conversion process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error can arise due to various reasons, including configuration issues, missing data, or inconsistencies in the source data.
  Possible Causes:
  
  Missing or Incomplete Data: The source data may be incomplete or missing required fields that are necessary for the simulation to proceed.
  Configuration Issues: There may be configuration settings in the migration cockpit or the source system that are not correctly set up.
  Data Inconsistencies: Inconsistencies in the data, such as invalid references or relationships, can lead to this error.
  Authorization Issues: The user executing the simulation may not have the necessary authorizations to perform the task.
  Technical Issues: There could be underlying technical issues, such as system performance problems or bugs in the migration tool.
  
  Solutions:
  
  Check Data Completeness: Ensure that all required fields in the source data are populated and that there are no missing entries.
  Review Configuration Settings: Verify that all necessary configuration settings in the migration cockpit and source system are correctly set up.
  Data Validation: Perform data validation checks to identify and resolve any inconsistencies or errors in the source data.
  User Authorizations: Confirm that the user has the appropriate authorizations to execute the simulation tasks.
  Consult Logs: Check the application logs for more detailed error messages that can provide insights into the specific cause of the issue.
  SAP Notes and Documentation: Look for relevant SAP Notes or documentation that may address this specific error message or provide guidance on troubleshooting steps.
  Contact SAP Support: If the issue persists, consider reaching out to SAP Support for assistance, providing them with detailed information about the error and the context in which it occurred.
  
  Related Information:
  
  SAP Migration Cockpit: This tool is used for data migration to SAP S/4HANA and includes various functionalities for simulating and executing data migration tasks.
  Error Handling: Familiarize yourself with the error handling mechanisms in SAP, as they can provide additional context and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to identify the cause of the CNV_OM_PRESEL128 error and implement a suitable solution.