How To Fix CNV_OM_MWBGEN020 - Object &1: starting generation (Table &2).

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_OM_MWBGEN - SLO: Messages for Object Based MBW Generation

• Message number: 020

• Message text: Object &1: starting generation (Table &2).

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_MWBGEN020 - Object &1: starting generation (Table &2). ?

  The SAP error message CNV_OM_MWBGEN020 typically occurs during the data migration process, particularly when using the SAP Migration Workbench (MWB). This error indicates that there is an issue with the generation of a specific object (like a table) during the migration process.
  Cause:
  The error message CNV_OM_MWBGEN020 can be caused by several factors, including:
  
  Missing or Incomplete Configuration: The object or table may not be properly configured in the migration project.
  Data Consistency Issues: There may be inconsistencies or errors in the data that is being migrated.
  Authorization Issues: The user executing the migration may not have the necessary authorizations to access or modify the specified object.
  Technical Issues: There could be underlying technical issues, such as database locks, that prevent the generation process from completing successfully.
  Incorrect Mapping: The mapping of fields between the source and target systems may not be correctly defined.
  
  Solution:
  To resolve the error CNV_OM_MWBGEN020, you can take the following steps:
  
  Check Configuration: Ensure that the configuration for the object (Table &2) is complete and correct. Review the settings in the Migration Workbench.
  Validate Data: Check the data being migrated for any inconsistencies or errors. Clean up any problematic records before attempting the migration again.
  Review Authorizations: Verify that the user executing the migration has the necessary authorizations to access and modify the specified object.
  Check for Locks: Investigate if there are any database locks or other technical issues that might be preventing the generation process. You can use transaction codes like SM12 to check for locks.
  Review Mapping: Ensure that the mapping of fields between the source and target systems is correctly defined. Make any necessary adjustments to the mapping.
  Consult Logs: Check the logs for more detailed error messages that can provide additional context about the failure. This can help identify the specific issue causing the error.
  Re-run the Generation: After addressing the above points, try to re-run the generation process for the object.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SE11 (Data Dictionary), SE80 (Object Navigator), and SM37 (Job Monitoring) to help troubleshoot the issue.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error or provide additional guidance.
  Documentation: Review the official SAP documentation for the Migration Workbench for best practices and troubleshooting tips.
  
  If the issue persists after following these steps, consider reaching out to SAP support for further assistance.