How To Fix CNV_OM_PRESEL148 - An error in the preselection scheduler occurred

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 148

• Message text: An error in the preselection scheduler occurred

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_PRESEL148 - An error in the preselection scheduler occurred ?

  The SAP error message CNV_OM_PRESEL148 indicates that there is an issue with the preselection scheduler in the context of a data migration or conversion process, typically related to the SAP S/4HANA migration or other data transfer activities. This error can arise due to various reasons, including configuration issues, data inconsistencies, or system resource limitations.
  Possible Causes:
  
  Configuration Issues: Incorrect settings in the preselection scheduler configuration can lead to this error.
  Data Inconsistencies: If the data being processed has inconsistencies or is not in the expected format, it can trigger this error.
  System Resource Limitations: Insufficient memory or processing power on the server can cause the scheduler to fail.
  Missing Authorizations: The user executing the process may lack the necessary authorizations to perform the operation.
  Technical Issues: Bugs or issues in the SAP system or the specific version being used can also lead to this error.
  
  Solutions:
  
  Check Configuration: Review the configuration settings for the preselection scheduler to ensure they are correct. This includes checking any parameters or settings that may have been altered.
  Data Validation: Validate the data being processed to ensure there are no inconsistencies or errors. This may involve checking for missing fields, incorrect data types, or other anomalies.
  Monitor System Resources: Check the system's memory and CPU usage to ensure that there are sufficient resources available. If necessary, consider increasing the resources or optimizing the workload.
  User Authorizations: Verify that the user executing the process has the necessary authorizations to perform the operation. Adjust roles and permissions as needed.
  Review Logs: Check the application logs and system logs for any additional error messages or warnings that may provide more context about the issue.
  SAP Notes: Search for relevant SAP Notes or patches that may address known issues related to the preselection scheduler. Applying these notes can sometimes resolve the problem.
  Contact SAP Support: If the issue persists after trying the above solutions, consider reaching out to SAP Support for further assistance. Provide them with detailed information about the error and the context in which it occurred.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes that may help in troubleshooting, such as SLG1 for application logs or ST22 for dump analysis.
  Documentation: Review SAP documentation related to the specific migration or conversion process you are working on, as it may contain additional troubleshooting steps or 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 error and implement a suitable solution.