How To Fix /BOBF/CONF_CDS091 - [BO check] Field order of join condition &2 deviates from KEY (view &1)

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/CONF_CDS -

• Message number: 091

• Message text: [BO check] Field order of join condition &2 deviates from KEY (view &1)

Self-Explanatory Message

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• What is the cause and solution for SAP error message /BOBF/CONF_CDS091 - [BO check] Field order of join condition &2 deviates from KEY (view &1) ?

  The SAP error message /BOBF/CONF_CDS091 typically occurs in the context of Core Data Services (CDS) views and Business Object Framework (BOF) configurations. This error indicates that there is a mismatch in the field order of the join condition compared to the key definition of the view. Here’s a breakdown of the cause, potential solutions, and related information:
  Cause:
  
  Field Order Mismatch: The error arises when the order of fields in the join condition does not match the order of the key fields defined in the CDS view. This can happen if the join is defined incorrectly or if the underlying data model has changed.
  Key Definition Changes: If the key fields of the CDS view have been modified (e.g., fields added, removed, or reordered), and the join conditions were not updated accordingly, this error can occur.
  Inconsistent Data Model: If there are inconsistencies in the data model or if the CDS view is referencing an outdated or incorrect version of the underlying tables or views.
  
  Solution:
  
  Check Join Conditions: Review the join conditions in the CDS view definition. Ensure that the fields used in the join are in the same order as defined in the key of the view.
  Update CDS View: If the key fields have changed, update the CDS view to reflect the correct order of fields in the join condition.
  Rebuild the View: If necessary, consider rebuilding the CDS view or the associated Business Object to ensure that all definitions are consistent and up to date.
  Activate the View: After making changes, ensure that you activate the CDS view to apply the updates.
  Check Dependencies: Verify if there are any dependent objects or views that might also need to be updated due to changes in the key fields or join conditions.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) are a way to define semantic data models in SAP. They allow for the creation of complex data models that can be consumed by various applications.
  Business Object Framework (BOF): This framework is used to manage business objects in SAP, providing a way to define and manipulate business data.
  SAP Notes and Documentation: Check SAP Notes for any known issues or updates related to this error message. The SAP Help Portal may also provide additional guidance on CDS views and their configuration.
  
  Debugging Steps:
  
  Analyze the CDS View: Use transaction code SE11 or SE80 to analyze the CDS view and its key fields.
  Review the Join Logic: Look at the SQL join logic generated by the CDS view to identify any discrepancies.
  Test Changes: After making adjustments, test the CDS view to ensure that the error is resolved and that the data is being retrieved correctly.
  
  By following these steps, you should be able to resolve the error message /BOBF/CONF_CDS091 and ensure that your CDS views and join conditions are correctly configured.