How To Fix CFD_REGISTRY_CHECK195 - Incompatible change detected: Insert of new branch for Union Suffix &1

SAP Error Message - Details

• Message type: E = Error

• Message class: CFD_REGISTRY_CHECK - Custom Fields: Messages for Registry Check

• Message number: 195

• Message text: Incompatible change detected: Insert of new branch for Union Suffix &1

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message CFD_REGISTRY_CHECK195 - Incompatible change detected: Insert of new branch for Union Suffix &1 ?

  The SAP error message CFD_REGISTRY_CHECK195, which states "Incompatible change detected: Insert of new branch for Union Suffix &1," typically occurs in the context of changes made to the data model or the structure of a CDS (Core Data Services) view or a similar object in SAP. This error indicates that there is an inconsistency or incompatibility in the data model due to changes that have been made, particularly when it comes to union operations.
  Cause:
  
  
  Incompatible Changes: The error is triggered when a new branch is added to a union that is not compatible with the existing structure. This can happen if:
  
  A new field is added to one of the branches of the union that does not exist in the other branches.
  The data types of the fields in the union branches do not match.
  The cardinality or the semantics of the data being combined in the union is not consistent.
  
  
  
  Data Model Changes: If there have been recent changes to the underlying tables or views that are part of the union, this can lead to incompatibility.
  
  
  Solution:
  
  
  Review the Union Structure: Check the definition of the union in your CDS view or data model. Ensure that all branches of the union have the same structure, including:
  
  The same number of fields.
  Matching data types for corresponding fields.
  Consistent semantics (e.g., if one branch has a field that is mandatory, all branches should have a similar field).
  
  
  
  Adjust the Data Model: If you find discrepancies, you may need to:
  
  Modify the fields in the branches to ensure they are compatible.
  Remove or adjust any recent changes that may have introduced the incompatibility.
  
  
  
  Rebuild the Object: Sometimes, it may be necessary to regenerate or activate the CDS view or the related objects to ensure that all changes are properly reflected.
  
  
  Check for Dependencies: Ensure that there are no other dependent objects that might be causing the issue. Sometimes, changes in one area can have cascading effects on others.
  
  
  Consult Documentation: Review SAP documentation or notes related to the specific version you are using, as there may be known issues or additional guidance on handling this error.
  
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that might address this specific error or provide additional troubleshooting steps.
  CDS View Documentation: Familiarize yourself with the best practices for creating and maintaining CDS views, especially when using unions.
  Testing: After making changes, thoroughly test the affected views or reports to ensure that the issue is resolved and that the data is being retrieved correctly.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, providing them with detailed information about the changes made and the context in which the error occurs.