How To Fix CNVMBTCHECK021 - &1| Structure relationship not given for the sender structure &2

SAP Error Message - Details

• Message type: E = Error

• Message class: CNVMBTCHECK - Messages for PCL Checks

• Message number: 021

• Message text: &1| Structure relationship not given for the sender structure &2

For further assistance please refer to SAP support.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message CNVMBTCHECK021 - &1| Structure relationship not given for the sender structure &2 ?

  The SAP error message CNVMBTCHECK021 indicates that there is a missing relationship between the sender structure and the target structure in a data migration or conversion process. This error typically arises during the execution of a migration project, particularly when using the SAP Migration Cockpit or similar tools.
  Cause:
  The error occurs when the system cannot find a defined relationship between the source (sender) structure and the target structure. This can happen due to several reasons:
  
  Missing Configuration: The mapping or configuration for the sender and target structures has not been set up correctly.
  Incorrect Structure Definition: The sender structure may not be defined properly in the system, or it may not exist.
  Data Model Changes: Changes in the data model or structures that have not been reflected in the migration settings.
  Inconsistent Data: The data being processed may not conform to the expected structure, leading to a failure in establishing the relationship.
  
  Solution:
  To resolve the CNVMBTCHECK021 error, you can follow these steps:
  
  
  Check Configuration:
  
  Verify that the sender and target structures are correctly defined in the migration settings.
  Ensure that the mapping between the sender and target structures is properly configured.
  
  
  
  Define Structure Relationships:
  
  If the relationship is missing, you may need to define it manually in the migration tool or configuration settings.
  Use transaction codes like LTMC (for Migration Cockpit) or relevant tools to check and define the structure relationships.
  
  
  
  Review Data Model:
  
  Ensure that the data model has not changed unexpectedly. If there have been changes, update the migration settings accordingly.
  
  
  
  Check for Updates:
  
  Ensure that you are using the latest version of the migration tools and that all relevant notes and patches from SAP have been applied.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for the specific migration tool you are using to understand the expected structure and relationships.
  
  
  
  Testing:
  
  After making the necessary changes, run a test migration to ensure that the error has been resolved.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with transaction codes related to data migration, such as LTMC, LTMOM, and others that may be relevant to your specific migration scenario.
  SAP Notes: Check SAP Notes for any known issues or additional guidance related to the CNVMBTCHECK021 error.
  Community Forums: Engage with SAP community forums or support channels for insights from other users who may have encountered similar issues.
  
  By following these steps, you should be able to identify and resolve the cause of the CNVMBTCHECK021 error in your SAP environment.