How To Fix RSQU027 - Cannot read queue data (DataSource &1, Version &2)

SAP Error Message - Details

• Message type: E = Error

• Message class: RSQU - S-API after 4.0: Delta Queue, Real Time Update

• Message number: 027

• Message text: Cannot read queue data (DataSource &1, Version &2)

What causes this issue?

The data in the delta queue for DataSource &1 are inconsistent. The
version &v2& of structure &v3& that was used to put the data in the
queue, can no longer be reconstructed.

System Response

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

How to fix this error?

Delete the queue data and restart the delta extraction. If there is a
danger that this will cause inconsistencies in BW, you must reinitialize
the delta update.

Error message extract from SAP system. Copyright SAP SE.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSQU027 - Cannot read queue data (DataSource &1, Version &2) ?

  The SAP error message RSQU027, which states "Cannot read queue data (DataSource &1, Version &2)," typically occurs in the context of SAP BW (Business Warehouse) when there is an issue with the data extraction process from a DataSource. This error can arise due to various reasons, and here are some common causes, potential solutions, and related information:
  Causes:
  
  DataSource Configuration Issues: The DataSource may not be properly configured or activated in the SAP system.
  Queue Issues: There may be issues with the data queue, such as it being empty or corrupted.
  Version Mismatch: The version specified in the error message may not match the available versions in the system.
  Authorization Issues: The user may not have the necessary authorizations to access the DataSource or the queue.
  Data Transfer Process (DTP) Issues: Problems with the DTP settings or execution can lead to this error.
  Technical Issues: There may be underlying technical issues in the SAP system, such as database inconsistencies or system performance problems.
  
  Solutions:
  
  Check DataSource Activation: Ensure that the DataSource is activated in the source system. You can do this by navigating to the DataSource in the SAP GUI and checking its status.
  Review Queue Status: Check the status of the queue for the DataSource. You can use transaction codes like RSA7 to monitor the queue and see if there are any stuck or failed entries.
  Verify Version: Make sure that the version specified in the error message is correct and exists in the system. You can check the available versions in the DataSource settings.
  Check Authorizations: Ensure that the user executing the data extraction has the necessary authorizations to access the DataSource and the associated data.
  Review DTP Settings: Check the settings of the Data Transfer Process (DTP) associated with the DataSource. Ensure that it is correctly configured and that there are no errors in its execution.
  Monitor System Performance: If there are performance issues in the SAP system, consider checking system logs and performance metrics to identify any bottlenecks.
  Reprocess Queue: If the queue is stuck, you may need to reprocess it. You can do this in transaction RSA7 or by using the appropriate function modules to reprocess the data.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as RSA1 (Data Warehousing Workbench), RSA7 (Monitor Queue), and RSMO (Monitor Data Transfer).
  SAP Notes: Check SAP Notes related to the specific DataSource or error message for any known issues or patches that may resolve the problem.
  Logs and Traces: Review application logs (transaction SLG1) and system logs (transaction SM21) for additional error messages or warnings that may provide more context.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation and support.