How To Fix RSQU004 - The delta queue could not be read

SAP Error Message - Details

• Message type: E = Error

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

• Message number: 004

• Message text: The delta queue could not be read

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

Unfortunately, there isn't any extra information in this error notice.

What else can you do?

First, use our AnswerBot below to get a possible cause and solution (requires a premium subscription).

Also, review the in-depth Common Questions & Answers listed below; you could discover a solution there or be able to connect with others who have faced similar challenges.

You can also try searching the SAP support portal (support.sap.com) but you need a special user ID to access it. It is possible that an SAP support note exists that provides additional details about the mistake or even steps for fixing it.

Smart SAP Assistant

• What is the cause and solution for SAP error message RSQU004 - The delta queue could not be read ?

  The SAP error message RSQU004 indicates that there is an issue with reading the delta queue in the SAP system. This error typically occurs in the context of SAP Data Warehousing or SAP BW (Business Warehouse) when there are problems with the delta extraction process from the source system to the target system.
  Causes of RSQU004
  
  
  Delta Queue Issues: The delta queue may be empty, corrupted, or not properly initialized. This can happen if there are issues with the data extraction process or if the delta queue has not been updated correctly.
  
  
  Data Source Configuration: Incorrect configuration of the data source in the SAP BW system can lead to problems in reading the delta queue.
  
  
  Locking Issues: If there are locks on the delta queue or if another process is currently accessing it, this can prevent the delta queue from being read.
  
  
  Technical Issues: There may be underlying technical issues such as network problems, database issues, or system performance problems that can affect the ability to read the delta queue.
  
  
  Transport Issues: If there have been recent transports or changes in the system, they may have affected the delta queue.
  
  
  Solutions to RSQU004
  
  
  Check Delta Queue Status: Use transaction code RSA7 to check the status of the delta queue. Ensure that there are entries in the delta queue and that it is not empty.
  
  
  Reinitialize Delta: If the delta queue is corrupted or not functioning correctly, you may need to reinitialize the delta for the data source. This can be done by:
  
  Deleting the existing delta queue.
  Reinitializing the delta extraction process.
  
  
  
  Check Data Source Configuration: Verify the configuration of the data source in the SAP BW system. Ensure that it is set up correctly and that all necessary settings are in place.
  
  
  Monitor Locks: Use transaction code SM12 to check for any locks on the delta queue. If there are locks, you may need to resolve them by terminating the processes that are holding the locks.
  
  
  Check for Errors in Source System: Investigate the source system for any errors or issues that may be affecting the delta extraction process. This may include checking for data inconsistencies or errors in the source tables.
  
  
  System Performance: Ensure that the SAP system is performing optimally. Check for any performance bottlenecks that may be affecting the ability to read the delta queue.
  
  
  Consult SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error message. There may be patches or updates available that can resolve the issue.
  
  
  Related Information
  
  
  Transaction Codes: 
  
  RSA7: Monitor delta queue.
  SM12: Monitor locks.
  RSC1: Check the data source.
  
  
  
  SAP BW Documentation: Review the SAP BW documentation for best practices on delta extraction and troubleshooting.
  
  
  SAP Community: Engage with the SAP Community forums for insights and solutions from other users who may have encountered similar issues.
  
  
  By following these steps, you should be able to diagnose and resolve the RSQU004 error effectively. If the problem persists, consider reaching out to SAP support for further assistance.