How To Fix SADL_GEN_DRFT_MSG108 - Key Fields for CDS view &1 and draft view &2 not generated (Union)

SAP Error Message - Details

• Message type: E = Error

• Message class: SADL_GEN_DRFT_MSG - Message for Draft generation

• Message number: 108

• Message text: Key Fields for CDS view &1 and draft view &2 not generated (Union)

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message SADL_GEN_DRFT_MSG108 - Key Fields for CDS view &1 and draft view &2 not generated (Union) ?

  The SAP error message SADL_GEN_DRFT_MSG108 indicates that there is an issue with the generation of key fields for a Core Data Services (CDS) view and its associated draft view. This error typically arises when there is a problem with the definition of the CDS view, particularly in the context of union operations.
  Cause:
  
  Missing Key Fields: The CDS view or the draft view may not have the necessary key fields defined. For a draft-enabled CDS view, key fields are essential for identifying records uniquely.
  Union Operation Issues: If the CDS view is defined using a union operation, all participating views must have the same key fields. If there is a mismatch in the key fields across the unioned views, this error can occur.
  Inconsistent Data Types: The data types of the key fields in the unioned views must be consistent. If there are discrepancies in data types, it can lead to this error.
  Incorrect Annotations: The annotations required for draft handling may not be correctly defined in the CDS view.
  
  Solution:
  
  Check Key Fields: Ensure that all key fields are properly defined in both the CDS view and the draft view. Each view involved in the union must have the same key fields.
  Review Union Definitions: If using a union, verify that all views in the union have the same structure, particularly the key fields. Adjust the definitions as necessary to ensure consistency.
  Data Type Consistency: Ensure that the data types of the key fields across all unioned views are the same. If there are differences, modify the definitions to align them.
  Annotations: Check the annotations related to draft handling in the CDS view. Ensure that they are correctly specified according to the requirements for draft-enabled views.
  Re-generate the Views: After making the necessary adjustments, try to regenerate the CDS view and the draft view to see if the error persists.
  
  Related Information:
  
  CDS Views: Core Data Services (CDS) is a framework for defining semantically rich data models in SAP. Understanding how to define key fields and draft views is crucial for effective use of CDS.
  Draft Handling: Draft handling in SAP allows users to create and edit data in a draft state before saving it permanently. This requires specific configurations in the CDS view.
  SAP Notes and Documentation: Check SAP Notes and the official SAP documentation for any updates or specific guidelines related to this error message. This can provide additional insights or patches that may resolve the issue.
  
  If the problem persists after following these steps, consider reaching out to SAP support for further assistance, providing them with the details of your CDS view definitions and the context in which the error occurs.