How To Fix RSO_CTC205 - Request delta for &1 (&2) before synchronization of delta queues

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 205

• Message text: Request delta for &1 (&2) before synchronization of delta queues

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSO_CTC205 - Request delta for &1 (&2) before synchronization of delta queues ?

  The SAP error message RSO_CTC205 indicates that there is an issue with the delta queue synchronization in the context of SAP BW (Business Warehouse) or SAP BW/4HANA. This error typically occurs when there is an attempt to request a delta load for a DataSource before the delta queues have been synchronized. 
  Cause:
  
  Delta Queue Not Synchronized: The primary cause of this error is that the delta queue for the specified DataSource has not been synchronized. This can happen if there are ongoing processes or if the delta queue has not been properly initialized.
  DataSource Issues: There may be issues with the DataSource itself, such as configuration problems or connectivity issues with the source system.
  Process Chain Issues: If you are using process chains to manage data loads, there may be a failure in the process chain that prevents the delta queue from being synchronized.
  
  Solution:
  
  
  Synchronize Delta Queue: 
  
  Go to the transaction code RSA7 in the SAP GUI. This transaction allows you to monitor and manage delta queues.
  Check the delta queue for the specific DataSource. If it shows that the queue is not synchronized, you can manually trigger the synchronization process.
  You can also use the RSYNC report to synchronize the delta queue.
  
  
  
  Check DataSource Configuration: 
  
  Ensure that the DataSource is correctly configured in the source system and that it is set up to allow delta extraction.
  Verify that the DataSource is active and that there are no errors in the source system.
  
  
  
  Monitor Process Chains: 
  
  If you are using process chains, check the status of the process chain that is responsible for loading data from the source system. Look for any errors or warnings that may indicate why the delta queue is not synchronized.
  
  
  
  Check for Locks: 
  
  Sometimes, locks on the delta queue can prevent synchronization. Check for any locks that may be in place and resolve them if necessary.
  
  
  
  Reinitialize Delta: 
  
  If the issue persists, you may need to reinitialize the delta for the DataSource. This involves performing a full load followed by a delta load. Be cautious with this step, as it may require additional time and resources.
  
  
  
  Related Information:
  
  
  Transaction Codes: 
  
  RSA7: Monitor delta queues.
  RSMO: Monitor data loads.
  RSC1: Maintain DataSource.
  
  
  
  SAP Notes: Check for any relevant SAP Notes that may address specific issues related to delta queues and synchronization.
  
  
  Documentation: Refer to SAP BW documentation for detailed information on delta processing and troubleshooting.
  
  
  By following these steps, you should be able to resolve the RSO_CTC205 error and successfully synchronize your delta queues.