How To Fix /SAPAPO/PDEM421 - BI RDA is running; running of this service is not allowed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/PDEM -

• Message number: 421

• Message text: BI RDA is running; running of this service is not allowed

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 /SAPAPO/PDEM421 - BI RDA is running; running of this service is not allowed ?

  The SAP error message /SAPAPO/PDEM421 BI RDA is running; running of this service is not allowed typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an attempt to execute a process that is not permitted because a Background Job (RDA - Real-time Data Acquisition) is currently running.
  Cause:
  
  Concurrent Execution: The error indicates that a Real-time Data Acquisition (RDA) job is already running. This prevents other processes from being executed simultaneously to avoid data inconsistencies or conflicts.
  System Lock: The system may have a lock in place for the RDA process, which is a common practice to ensure data integrity during data loading or processing.
  Configuration Issues: There may be configuration settings that restrict the execution of certain processes while RDA is active.
  
  Solution:
  
  
  Check Running Jobs: 
  
  Go to transaction code SM37 in SAP to check for any running background jobs. Look for jobs related to RDA and see if they are still in progress.
  If the job is taking too long, you may need to investigate why it is delayed or consider terminating it if it is stuck.
  
  
  
  Wait for Completion: If you find that an RDA job is running, the simplest solution is to wait for it to complete before attempting to run the process again.
  
  
  Terminate Stuck Jobs: If you determine that the RDA job is stuck and not progressing, you can terminate it from the SM37 transaction. Be cautious with this approach, as terminating jobs can lead to data inconsistencies.
  
  
  Review Job Scheduling: If RDA jobs are frequently causing conflicts, consider reviewing the scheduling of these jobs to avoid overlaps with other processes.
  
  
  System Configuration: Check the configuration settings related to RDA in the SAP APO system. Ensure that they are set up correctly to allow for the necessary processes to run without conflict.
  
  
  Consult Documentation: Review SAP documentation or notes related to RDA and APO for any specific recommendations or best practices.
  
  
  Related Information:
  
  Transaction Codes: 
  
  SM37: Monitor background jobs.
  RSCATPR: Check the status of RDA jobs.
  
  
  SAP Notes: Search for relevant SAP Notes in the SAP Support Portal that may address this specific error or provide additional troubleshooting steps.
  Performance Monitoring: Regularly monitor system performance and job execution times to identify potential bottlenecks or issues with RDA processes.
  
  If the issue persists after following these steps, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.