How To Fix RSAN_RT555 - Source data is being read and the result is being calculated

SAP Error Message - Details

• Message type: E = Error

• Message class: RSAN_RT - Messages for Runtime Analysis

• Message number: 555

• Message text: Source data is being read and the result is being calculated

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSAN_RT555 - Source data is being read and the result is being calculated ?

  The SAP error message RSAN_RT555 indicates that the source data is currently being read and the result is being calculated. This message typically occurs in the context of SAP BW (Business Warehouse) or SAP BW/4HANA when a query or data extraction process is running, and it is trying to access data that is still being processed.
  Cause:
  
  Concurrent Processing: The error often arises when multiple processes are trying to access the same data set simultaneously. For example, if a data load is in progress while a query is being executed, the query may encounter this message.
  Long-running Queries: If a query takes a long time to execute, it may lead to this message if another query or process tries to access the same data.
  Locks on Data: SAP uses locks to ensure data integrity during processing. If a lock is in place due to another process, you may see this message.
  
  Solution:
  
  Wait and Retry: The simplest solution is to wait for the current data processing to complete and then retry the query or operation. Monitor the status of the data load or processing job.
  Check Background Jobs: Use transaction codes like SM37 to check for any background jobs that might be running and causing the lock. If you find a job that is taking too long, you may need to investigate or terminate it if appropriate.
  Optimize Queries: If you frequently encounter this issue, consider optimizing your queries to reduce execution time. This can involve:
  
  Reducing the amount of data being processed.
  Using appropriate filters.
  Aggregating data where possible.
  
  
  Review Data Load Processes: Ensure that data load processes are scheduled during off-peak hours to minimize conflicts with query execution.
  Check for Locks: Use transaction SM12 to check for any locks that might be causing the issue. If you find unnecessary locks, you can release them, but be cautious as this may affect other users or processes.
  System Performance: If the system is under heavy load, consider reviewing system performance and resource allocation. Upgrading hardware or optimizing system settings may help.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as SM37 (Job Monitoring), SM12 (Lock Entries), and ST22 (Dump Analysis) for troubleshooting.
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. SAP frequently updates its knowledge base with solutions for common problems.
  Documentation: Review SAP BW documentation for best practices on data loading and query performance optimization.
  
  If the problem persists after trying the above solutions, it may be beneficial to consult with your SAP Basis or BW team for further investigation.