How To Fix RSBC021 - Only one DTP can be connected to a BWA-only InfoCube

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBC - Messages for DTP Command and Command Templates

• Message number: 021

• Message text: Only one DTP can be connected to a BWA-only InfoCube

What causes this issue?

InfoCube <(>&<)>1 is an InfoCube without database persistence. The data
is only stored on the BW Accelerator. Only one DTP can be connected to
InfoCubes with this property.

System Response

The system issues an error message and will not allow you to continue with this transaction until the error is resolved.

How to fix this error?

Procedure for System Administrators

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSBC021 - Only one DTP can be connected to a BWA-only InfoCube ?

  The SAP error message RSBC021 indicates that you are trying to connect more than one Data Transfer Process (DTP) to a BWA-only InfoCube. In SAP BW (Business Warehouse), a BWA-only InfoCube is designed to work with the SAP Business Warehouse Accelerator (BWA) for optimized query performance. However, due to the architecture of BWA-only InfoCubes, they can only be connected to a single DTP.
  Cause:
  The primary cause of this error is the attempt to create or use multiple DTPs for data loading into a BWA-only InfoCube. BWA-only InfoCubes are structured in such a way that they can only handle one DTP for data extraction and loading, which is a limitation of the BWA architecture.
  Solution:
  To resolve the RSBC021 error, you need to ensure that only one DTP is associated with the BWA-only InfoCube. Here are the steps you can take:
  
  
  Identify Existing DTPs: Check the existing DTPs that are connected to the BWA-only InfoCube. You can do this by navigating to the DTP management area in the SAP BW system.
  
  
  Remove or Modify DTPs: If you find that there are multiple DTPs connected to the InfoCube, you will need to either delete or modify the DTPs to ensure that only one remains. 
  
  
  Use the Correct DTP: If you have a specific DTP that you want to keep, make sure it is properly configured for the data loading process. 
  
  
  Reconfigure Data Flows: If necessary, reconfigure your data flows to ensure that they are aligned with the single DTP that you are using for the BWA-only InfoCube.
  
  
  Test the Configuration: After making the necessary changes, test the DTP to ensure that data can be loaded into the BWA-only InfoCube without encountering the error.
  
  
  Related Information:
  
  BWA Architecture: Understanding the architecture of BWA and how it interacts with InfoCubes can help in designing your data flows effectively.
  DTP Management: Familiarize yourself with the DTP management tools in SAP BW to better manage your data transfer processes.
  Performance Considerations: BWA-only InfoCubes are optimized for performance, so ensure that your DTP is configured to take advantage of this optimization.
  SAP Notes and Documentation: Check SAP Notes and official documentation for any updates or additional guidance related to BWA-only InfoCubes and DTPs.
  
  By following these steps, you should be able to resolve the RSBC021 error and successfully manage your data loading processes in SAP BW.