How To Fix RSDD751 - A cancelled or active realignment run is blocking this action

RSDD751 - Overview

• Message type: E = Error

• Message class: RSDD - Message class for data manager

• Message number: 751

• Message text: A cancelled or active realignment run is blocking this action

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.

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Smart SAP Assistant

• What is the cause and solution for SAP error message RSDD751 - A cancelled or active realignment run is blocking this action ?

  The SAP error message RSDD751 indicates that a realignment run is either currently active or has been cancelled, which is preventing you from performing certain actions in the system. This error typically occurs in the context of SAP BW (Business Warehouse) when you are trying to execute a process that requires the data model to be in a stable state.
  
  Cause:
  
  Active Realignment Run: A realignment process is currently running, which means that the system is busy processing data and cannot accept new requests that would interfere with this operation.
  Cancelled Realignment Run: A previous realignment run was cancelled, but the system still recognizes it as a blocking process. This can happen if the cancellation did not complete properly or if there are residual locks in the system.
  
  
  Solution:
  To resolve the RSDD751 error, you can follow these steps:
  
  
  Check Active Processes:
  
  Go to transaction code SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to