How To Fix RSAPI_CTC028 - BW system &1 is not correctly connected to BW source system &2

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAPI_CTC - Messages to be shown for BW SAPI configurations

• Message number: 028

• Message text: BW system &1 is not correctly connected to BW source system &2

What causes this issue?

Connections are not maintained correctly between the BW system &V1& and
the BW source system &V2&.

System Response

Errors occur during post system copy configuration.

How to fix this error?

Go to transaction RSA1 of BW system &V1&. Locate the source system &V2&
in the <ZK>Source Systems </>tab. Right click and perform a check.
Repair the connection based on the displayed error messages.

Procedure for System Administrators

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

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSAPI_CTC028 - BW system &1 is not correctly connected to BW source system &2 ?

  The SAP error message RSAPI_CTC028 indicates that there is an issue with the connection between a BW (Business Warehouse) system and its source system. This error typically arises when the BW system is unable to establish a proper connection to the source system, which could be an SAP ERP system or another data source.
  Causes:
  
  Network Issues: There may be network connectivity problems between the BW system and the source system.
  Incorrect Configuration: The connection settings in the BW system may be incorrectly configured. This includes settings in the RFC (Remote Function Call) destination.
  Authorization Issues: The user credentials used for the connection may not have the necessary authorizations to access the source system.
  Source System Not Active: The source system may not be active or may be down for maintenance.
  Transport Issues: If the source system was recently transported or changed, it may not be properly registered in the BW system.
  Version Compatibility: There may be compatibility issues between the versions of the BW system and the source system.
  
  Solutions:
  
  Check Network Connectivity: Ensure that there is proper network connectivity between the BW system and the source system. You can use tools like ping or telnet to test connectivity.
  Verify RFC Destination:
  
  Go to transaction SM59 in the BW system.
  Check the RFC destination that points to the source system.
  Test the connection to ensure it is working correctly.
  
  
  Review Authorization: Ensure that the user credentials used for the connection have the necessary authorizations in the source system.
  Check Source System Status: Verify that the source system is up and running. You can check the status in the SAP GUI or through system monitoring tools.
  Re-register Source System: If the source system was recently changed or transported, you may need to re-register it in the BW system. This can be done through transaction RSA1 (Data Warehousing Workbench) and navigating to the source systems section.
  Check Version Compatibility: Ensure that both systems are compatible in terms of version and configuration.
  
  Related Information:
  
  Transaction Codes:
  
  SM59: For managing RFC destinations.
  RSA1: For accessing the Data Warehousing Workbench.
  ST22: For checking dump analysis if there are any related dumps.
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to this error message. You can search for notes in the SAP Support Portal.
  Logs and Traces: Review logs and traces for more detailed error messages that can provide additional context for troubleshooting.
  
  By following these steps, you should be able to identify and resolve the issue causing the RSAPI_CTC028 error message in your SAP BW system.