How To Fix RSDS194 - Changing "Typed PSA" property creates new PSA version

SAP Error Message - Details

• Message type: E = Error

• Message class: RSDS - New DataSource

• Message number: 194

• Message text: Changing "Typed PSA" property creates new PSA version

What causes this issue?

If you change the property that specifies that the PSA is in typed and
text-type format, a new PSA table is created on the database. As a
result, it is no longer possible to extract data that is already in the
PSA.

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?

For more information, see <DS:NA.RSDS187>incompatible change of fields
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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 RSDS194 - Changing "Typed PSA" property creates new PSA version ?

  The SAP error message RSDS194 indicates that when you attempt to change the "Typed PSA" property of a Persistent Staging Area (PSA) in SAP BW (Business Warehouse), a new version of the PSA is created. This behavior is by design in SAP BW, and it is important to understand the implications and how to manage it.
  Cause:
  The error message RSDS194 is triggered because changing the "Typed PSA" property affects the structure and data handling of the PSA. The "Typed PSA" property determines how data is stored and processed in the PSA. When you change this property, SAP BW treats it as a significant change that requires the creation of a new version of the PSA to maintain data integrity and ensure that existing data is not affected by the changes.
  Solution:
  
  
  Understand the Impact: Before making changes to the "Typed PSA" property, ensure that you understand the implications of the change. Review the data model and how it interacts with other objects in your BW system.
  
  
  Create a New PSA Version: If you need to change the "Typed PSA" property, you will need to accept that a new version of the PSA will be created. You can then configure the new PSA as needed.
  
  
  Data Migration: If necessary, plan for data migration from the old PSA version to the new one. This may involve extracting data from the old PSA and loading it into the new version, depending on your data requirements.
  
  
  Update Data Flow: After creating a new PSA version, ensure that any data flows, transformations, or processes that reference the old PSA are updated to point to the new version.
  
  
  Testing: After making changes, conduct thorough testing to ensure that the new PSA version works as expected and that data integrity is maintained.
  
  
  Related Information:
  
  PSA in SAP BW: The Persistent Staging Area is used to store data temporarily before it is transformed and loaded into the data warehouse. It is crucial for ETL (Extract, Transform, Load) processes.
  Versioning in SAP BW: SAP BW uses versioning to manage changes in data structures. Each version can have different properties, and this allows for backward compatibility and data integrity.
  Documentation: Refer to SAP Help documentation for more details on PSAs, versioning, and best practices for managing changes in your BW environment.
  
  By following these guidelines, you can effectively manage the changes to the "Typed PSA" property and mitigate any potential issues that may arise from creating a new PSA version.