How To Fix /BOBF/DAC021 - Union DAC doesn't support requests regarding draft AND active data

SAP Error Message - Details

• Message type: E = Error

• Message class: /BOBF/DAC -

• Message number: 021

• Message text: Union DAC doesn't support requests regarding draft AND active data

Self-Explanatory Message

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• What is the cause and solution for SAP error message /BOBF/DAC021 - Union DAC doesn't support requests regarding draft AND active data ?

  The SAP error message /BOBF/DAC021 Union DAC doesn't support requests regarding draft AND active data typically occurs in the context of the Business Object Processing Framework (BOPF) when there is an attempt to access both draft and active data simultaneously in a Union Data Access Class (DAC). This situation arises because Union DACs are designed to handle either draft or active data, but not both at the same time.
  Cause:
  
  Union DAC Limitation: The Union DAC is not designed to handle requests that involve both draft and active data. This is a limitation of the framework.
  Request Configuration: The request being made may inadvertently include both draft and active data, which is not supported.
  Data Model Design: The underlying data model may be incorrectly configured to allow for such requests.
  
  Solution:
  
  Separate Requests: Modify the logic in your application to ensure that requests are made separately for draft and active data. You should either query for draft data or active data, but not both in a single request.
  Check Data Access Logic: Review the data access logic in your application to ensure that it adheres to the constraints of the Union DAC. Ensure that the requests are properly filtered to avoid mixing draft and active data.
  Use Appropriate DAC: If you need to work with both draft and active data, consider using separate DACs that are specifically designed for each type of data.
  Debugging: If you are unsure where the issue is occurring, use debugging tools to trace the request and identify where the draft and active data are being combined.
  
  Related Information:
  
  BOPF Documentation: Review the official SAP documentation on BOPF and Union DACs to understand their limitations and best practices.
  SAP Notes: Check for any relevant SAP Notes that may address this specific error or provide additional guidance on handling draft and active data.
  Community Forums: Engage with the SAP community forums or support channels to see if others have encountered similar issues and what solutions they have implemented.
  
  By following these steps, you should be able to resolve the error and ensure that your application correctly handles requests for draft and active data.