How To Fix UR491 - Delta BW extraction of transaction data cannot be restarted

UR491 - Overview

• Message type: E = Error

• Message class: UR -

• Message number: 491

• Message text: Delta BW extraction of transaction data cannot be restarted

Self-Explanatory Message

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UR491 - Details

• The SAP error message UR491 indicates that a delta extraction for a BW (Business Warehouse) data source cannot be restarted. This typically occurs in the context of data extraction from SAP ERP systems to SAP BW, particularly when dealing with delta loads of transaction data.
  
  Cause:
  The error can be caused by several factors, including:
  
  Delta Queue Issues: The delta queue may be in an inconsistent state, or there may be issues with the delta management in the source system.
  Data Consistency: If there are inconsistencies in the data or if the data has been modified in a way that affects the delta extraction process, it can lead to this error.
  Technical Issues: There may be technical issues with the data source or the extraction process itself, such as missing or corrupted data.
  Locking Issues: If the data being extracted is locked by another process, it can prevent the delta extraction from being restarted.
  
  Configuration Issues: Incorrect