How To Fix RSO_CTC127 - BDLS task has wrong mapping for system &1; it must be a BW source system

SAP Error Message - Details

• Message type: E = Error

• Message class: RSO_CTC - Message class for CTC related messages

• Message number: 127

• Message text: BDLS task has wrong mapping for system &1; it must be a BW source system

What causes this issue?

You have chosen to copy BW Source system &V1& as well. The
<ZK>Conversion of Logical System Names</> task will therefore convert
all references of the original BW Source system (copied from) with the
target BW Source system &V1& (Copied to). In the <ZK>Parameter</> dialog
of the <ZK>Conversion of Logical System Names</> task, the mapping of
system &V1& is not maintained correctly however. &V1& has to be mapped
to the original BW source system.
Errors will appear if the FROM value is not a BW source system or is
left blank.

System Response

Conversion of logical system names will result in errors.

How to fix this error?

Enter a valid logical system name for the mapping of system &V1& in the
<ZK>Parameter</> dialog of the <ZK>Conversion of Logical System Names</>
task.
If the logical system name of the original BW source system is not
maintained, enter it in the <ZK>FROM</> field.
If the logical system name of the target BW source system is not
maintained, enter it in the <ZK>TO</> field
The <ZK>FROM</> value should be mapped to the <ZK>TO</> value.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_CTC127 - BDLS task has wrong mapping for system &1; it must be a BW source system ?

  The SAP error message RSO_CTC127 indicates that there is an issue with the mapping of a system in the context of a BDLS (Batch Data Load Service) task. Specifically, it states that the system in question must be a BW (Business Warehouse) source system. This error typically arises during the process of converting or migrating data between different systems, particularly when dealing with BW data sources.
  Cause:
  The error occurs when the system mapping in the BDLS task is incorrectly configured. This can happen due to several reasons:
  
  Incorrect System Type: The system that is being referenced in the BDLS task is not recognized as a BW source system.
  Configuration Issues: There may be misconfigurations in the BW system settings or in the BDLS task itself.
  Data Source Changes: If the data source has been changed or if the system landscape has been modified, it may lead to this error.
  Version Compatibility: There may be compatibility issues between different versions of SAP systems involved in the data transfer.
  
  Solution:
  To resolve the RSO_CTC127 error, you can follow these steps:
  
  
  Check System Configuration:
  
  Verify that the system you are trying to map is indeed a BW source system. You can do this by checking the system settings in the SAP BW system.
  Ensure that the system is correctly defined in the SAP Landscape.
  
  
  
  Review BDLS Task Settings:
  
  Go to the BDLS task configuration and check the mapping settings. Ensure that the source system is correctly specified as a BW source system.
  If necessary, recreate the BDLS task with the correct mappings.
  
  
  
  Update System Information:
  
  If there have been changes to the system landscape, update the relevant system information in the BW system and ensure that all connections are valid.
  
  
  
  Check for Notes and Patches:
  
  Look for any SAP Notes or patches that may address this specific error. Sometimes, SAP releases updates that fix known issues.
  
  
  
  Consult Documentation:
  
  Refer to the SAP documentation for BDLS and BW systems for any specific requirements or configurations that need to be in place.
  
  
  
  Testing:
  
  After making the necessary changes, test the BDLS task again to see if the error persists.
  
  
  
  Related Information:
  
  BDLS (Batch Data Load Service): A tool used in SAP to convert data from one system to another, often used during system migrations or upgrades.
  BW (Business Warehouse): A data warehousing solution from SAP that allows for the integration, transformation, and analysis of data.
  SAP Notes: Regularly check the SAP Support Portal for any relevant notes that may provide additional insights or solutions to the error.
  
  If the issue persists after following these steps, it may be beneficial to consult with SAP support or a technical consultant who specializes in SAP BW and BDLS tasks.