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

/SAPAPO/PDEM421 - Overview

• 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.

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/SAPAPO/PDEM421 - Details

• 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