How To Fix RSCRT123 - No active PSA found for DataSource '&1' and source system '&2'

RSCRT123 - Overview

• Message type: E = Error

• Message class: RSCRT - Near-To-Real-Time Messages

• Message number: 123

• Message text: No active PSA found for DataSource '&1' and source system '&2'

Self-Explanatory Message

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To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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RSCRT123 - Details

• The SAP error message RSCRT123 indicates that there is no active Persistent Staging Area (PSA) found for a specific DataSource and source system. This error typically occurs in the context of SAP BW (Business Warehouse) when trying to load data from a source system into the BW system.
  
  Cause:
  
  Inactive PSA: The PSA for the specified DataSource may not be activated or may have been deleted.
  Incorrect DataSource Configuration: The DataSource might not be properly configured in the BW system.
  Source System Issues: The source system may not be connected correctly, or there may be issues with the DataSource in the source system.
  Transport Issues: If the DataSource was transported from another system, it may not have been activated properly in the target system.
  
  
  Solution:
  
  
  Check PSA Activation:
  
  Go to the Data Warehousing Workbench (transaction code RSA1).
  Navigate to the DataSource in question and check if the PSA is active.
  If it is inactive, activate it.
  
  
  
  Verify DataSource Configuration:
  
  Ensure that the