How To Fix RSBK258 - DataSource &2 is currently assigned to real-time daemon &1

SAP Error Message - Details

• Message type: E = Error

• Message class: RSBK - Messages for the Data Transfer Process

• Message number: 258

• Message text: DataSource &2 is currently assigned to real-time daemon &1

What causes this issue?

You want to start a data transfer process (DTP) manually or in a process
chain. The DataSource representing the source of the DTP, however, is
already assigned to a daemon for real-time data acquisition (daemon
number &v1&).

System Response

In this status, the DTP can only transfer data with real-time data
acquisition.

How to fix this error?

If you want to execute the DTP in a process chain, first delete the
assignment of the DataSource &v2& to the daemon &v1&.

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 RSBK258 - DataSource &2 is currently assigned to real-time daemon &1 ?

  The SAP error message RSBK258 indicates that a specific DataSource (identified by &2) is currently assigned to a real-time daemon (identified by &1). This typically occurs in the context of SAP BW (Business Warehouse) when you are trying to perform an operation that requires the DataSource to be unassigned from the real-time daemon.
  Cause:
  The error arises when you attempt to modify, delete, or perform certain operations on a DataSource that is actively being used by a real-time data acquisition process. The real-time daemon is responsible for handling real-time data flows into the SAP BW system, and if a DataSource is still linked to it, the system prevents changes to ensure data integrity and consistency.
  Solution:
  To resolve this error, you need to unassign the DataSource from the real-time daemon. Here are the steps to do this:
  
  
  Access the DataSource in SAP BW:
  
  Go to the SAP BW system and navigate to the DataSource in question.
  
  
  
  Check the Real-Time Daemon Assignment:
  
  Use transaction code RSA1 to access the Data Warehousing Workbench.
  Navigate to the DataSources section and locate the DataSource that is causing the issue.
  
  
  
  Unassign the DataSource:
  
  In the DataSource properties, look for the option to manage the real-time data acquisition settings.
  Unassign the DataSource from the real-time daemon. This may involve stopping the real-time data flow or deactivating the DataSource from the daemon.
  
  
  
  Confirm Changes:
  
  After unassigning, confirm that the DataSource is no longer linked to the real-time daemon.
  You can check the status of the DataSource to ensure it is now available for the operations you want to perform.
  
  
  
  Retry the Operation:
  
  Once the DataSource is unassigned, you can retry the operation that initially triggered the error.
  
  
  
  Related Information:
  
  Real-Time Data Acquisition (RTDA): This is a method in SAP BW that allows for real-time data loading from source systems. Understanding how RTDA works can help in managing DataSources effectively.
  Monitoring Real-Time Daemon: You can monitor the status of real-time daemons and their associated DataSources using transaction codes like RSMO or RSMO2.
  Documentation: Refer to SAP Help documentation for detailed guidance on managing DataSources and real-time data acquisition processes.
  
  If you continue to experience issues after following these steps, consider consulting with your SAP Basis or BW administrator for further assistance, as they may have additional tools or insights into the specific configuration of your SAP environment.