How To Fix CNV_PE_POST128 - Error trying to call the building function module (WL210)

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 128

• Message text: Error trying to call the building function module (WL210)

What causes this issue?

Trying to call function module <ZH>&V1&</> ended with error <ZH>&V2&</>
for worklist item <ZH>&V3&</> with ID <ZH>&V4&</>

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST128 - Error trying to call the building function module (WL210) ?

  The SAP error message CNV_PE_POST128 typically occurs during the execution of a conversion or migration process, particularly when using the SAP Landscape Transformation (SLT) or other data migration tools. The error indicates that there was an issue when trying to call a specific function module, in this case, WL210.
  Cause:
  The error can be caused by several factors, including:
  
  Missing or Incomplete Configuration: The function module may not be properly configured or may be missing necessary parameters.
  Authorization Issues: The user executing the process may not have the required authorizations to call the function module.
  Data Issues: There may be inconsistencies or issues with the data being processed that prevent the function module from executing correctly.
  System or Environment Issues: There could be problems with the SAP system itself, such as missing components, incorrect versions, or system performance issues.
  
  Solution:
  To resolve the CNV_PE_POST128 error, you can take the following steps:
  
  
  Check Configuration: Ensure that the configuration for the migration or conversion process is complete and correct. Verify that all necessary parameters for the function module WL210 are set up properly.
  
  
  Review Authorizations: Check the user authorizations to ensure that the user has the necessary permissions to execute the function module. You may need to consult with your SAP security team to verify and adjust authorizations.
  
  
  Analyze Data: Review the data being processed to identify any inconsistencies or issues. You may need to clean or transform the data before re-running the migration process.
  
  
  Check Logs: Look at the application logs (transaction SLG1) for more detailed error messages or warnings that can provide additional context about the failure.
  
  
  Debugging: If you have access to the development environment, you can debug the function module WL210 to identify the exact point of failure and understand what is causing the error.
  
  
  Consult Documentation: Refer to SAP Notes or documentation related to the specific migration or conversion process you are using. There may be known issues or patches available.
  
  
  Contact SAP Support: If the issue persists after trying the above steps, consider reaching out to SAP Support for assistance. Provide them with detailed information about the error, including any logs or screenshots.
  
  
  Related Information:
  
  SAP Notes: Search for relevant SAP Notes that may address this specific error or provide guidance on the function module WL210.
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SLG1 (Application Log) and SE37 (Function Module) to investigate further.
  Documentation: Review the official SAP documentation for the specific migration tool or process you are using to ensure compliance with best practices.
  
  By following these steps, you should be able to diagnose and resolve the CNV_PE_POST128 error effectively.