How To Fix CNVMBT145 - Objects need to be regenerated (see longtext)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBT - Messages for MBT/API/PCL

• Message number: 145

• Message text: Objects need to be regenerated (see longtext)

What causes this issue?

You changed the reading type of one or more conversion object. Thus the
changed conversion objects need to be regenerated. This could be done
with the troubleshooter "Troubleshooter for Conversion Objects".

How to fix this error?

Access the troubleshooter "Troubleshooter for Conversion Objects" which
is assigned to the activity "Start Data Transfer". You could either
use the Auto-Determination-Modus. All objects which need to be generated
again will be determined and regenerated. Please note that the
auto-determination-mode might also find other objects which need to be
regenerated because settings were changed
use the Force Redefinition Mode and enter all objects for which you
changed the reading type
Affter regenerating the objects you could continue with the data
selection and data transfer.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBT145 - Objects need to be regenerated (see longtext) ?

  The SAP error message CNVMBT145, which states "Objects need to be regenerated (see longtext)," typically occurs in the context of data migration or conversion processes, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that certain objects, such as data structures or transformation rules, need to be regenerated due to changes in the underlying data model or configuration.
  Cause:
  
  Changes in Data Model: The underlying data structures or models have been modified, which can happen during system upgrades or when new migration objects are introduced.
  Incomplete Migration Setup: The migration setup may not have been completed correctly, leading to inconsistencies in the objects that need to be processed.
  Version Mismatch: There may be a mismatch between the version of the migration tool and the version of the source or target system.
  
  Solution:
  
  
  Regenerate Objects: Follow the instructions in the long text of the error message to regenerate the affected objects. This usually involves:
  
  Accessing the relevant transaction or tool in SAP (e.g., transaction code for the Migration Cockpit).
  Identifying the specific objects that need regeneration.
  Executing the regeneration process, which may involve re-running certain configuration steps or scripts.
  
  
  
  Check Migration Settings: Ensure that all migration settings are correctly configured and that you are using the appropriate version of the migration tool for your system.
  
  
  Review Documentation: Consult the SAP documentation or notes related to the specific migration process you are using. This can provide insights into common issues and their resolutions.
  
  
  System Logs: Check system logs for additional error messages or warnings that may provide more context about the issue.
  
  
  SAP Support: If the issue persists, consider reaching out to SAP Support for assistance. They can provide guidance based on the specific details of your system and migration scenario.
  
  
  Related Information:
  
  SAP Notes: Look for relevant SAP Notes that address this specific error message or provide guidance on migration processes.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit, which may include troubleshooting tips and best practices.
  Community Forums: Engage with the SAP Community or forums where other users may have encountered similar issues and can share their solutions.
  
  By following these steps, you should be able to resolve the CNVMBT145 error and successfully continue with your migration or data conversion process.