How To Fix CNV_PE_POST126 - Building function module (WL210) not generated yet

SAP Error Message - Details

• Message type: E = Error

• Message class: CNV_PE_POST -

• Message number: 126

• Message text: Building function module (WL210) not generated yet

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.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNV_PE_POST126 - Building function module (WL210) not generated yet ?

  The SAP error message "CNV_PE_POST126 Building function module (WL210) not generated yet" typically occurs during the execution of a conversion or migration process, particularly when using the SAP S/4HANA Migration Cockpit or similar tools. This error indicates that a required function module has not been generated, which is necessary for the conversion process to proceed.
  Cause:
  
  Incomplete Setup: The function module may not have been generated due to incomplete setup or configuration of the migration project.
  Missing Authorizations: The user executing the migration may not have the necessary authorizations to generate the function module.
  System Issues: There may be underlying issues with the SAP system, such as inconsistencies in the database or problems with the transport layer.
  Previous Errors: If there were previous errors in the migration process, they may have prevented the function module from being generated.
  
  Solution:
  
  
  Generate the Function Module:
  
  Go to transaction SE80 (Object Navigator) or SE37 (Function Builder).
  Check if the function module WL210 exists. If it does not, you may need to generate it manually or check the migration cockpit settings.
  If it exists but is not active, activate it.
  
  
  
  Check for Errors:
  
  Review the logs for any previous errors that may have occurred during the migration process. Address any issues found in the logs.
  
  
  
  User Authorizations:
  
  Ensure that the user executing the migration has the necessary authorizations to generate function modules. This may require roles such as SAP_ALL or specific roles related to the migration process.
  
  
  
  Run the Migration Again:
  
  After addressing the above points, try running the migration process again to see if the error persists.
  
  
  
  Consult SAP Notes:
  
  Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve the issue.
  
  
  
  System Check:
  
  Perform a system check to ensure that there are no underlying issues with the SAP system that could be causing the problem.
  
  
  
  Related Information:
  
  SAP Notes: Always check for relevant SAP Notes that may provide additional context or solutions for this error.
  Transaction Codes: Familiarize yourself with transaction codes like SE80, SE37, and SLG1 (for application logs) to troubleshoot effectively.
  Migration Cockpit Documentation: Review the official SAP documentation for the Migration Cockpit for any specific prerequisites or steps that may have been overlooked.
  
  If the issue persists after trying the above solutions, it may be beneficial to reach out to SAP support for further assistance.