How To Fix UAC003 - &1 entries were reloaded into the undo stack

SAP Error Message - Details

• Message type: E = Error

• Message class: UAC -

• Message number: 003

• Message text: &1 entries were reloaded into the undo stack

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message UAC003 - &1 entries were reloaded into the undo stack ?

  The SAP error message "UAC003 &1 entries were reloaded into the undo stack" typically relates to the Undo Management feature in SAP, particularly in the context of the SAP ABAP programming environment. This message indicates that a certain number of entries (denoted by &1) have been reloaded into the undo stack, which is used to manage changes made during a transaction.
  Cause:
  
  Transaction Rollback: The error often occurs when a transaction is rolled back due to an error or an explicit rollback command. This can happen if there are issues with data consistency or if a user cancels a transaction.
  Concurrency Issues: If multiple users are trying to modify the same data simultaneously, it can lead to conflicts that result in entries being reloaded into the undo stack.
  Long-running Transactions: If a transaction takes too long to complete, it may be interrupted, leading to the reloading of entries into the undo stack.
  Database Locking: If there are locks on the database that prevent the transaction from completing, it may cause entries to be reloaded.
  
  Solution:
  
  Check for Errors: Review the transaction logs or error messages preceding the UAC003 message to identify the root cause of the rollback.
  Transaction Management: Ensure that transactions are managed properly, and avoid long-running transactions that could lead to timeouts or locks.
  Data Consistency: Verify that the data being processed is consistent and that there are no conflicts with other transactions.
  Concurrency Control: Implement proper locking mechanisms or use optimistic concurrency control to prevent conflicts between users.
  Debugging: If you are a developer, use debugging tools to trace the execution of the program and identify where the issue occurs.
  
  Related Information:
  
  Undo Management: Understand how undo management works in SAP and how it can affect transaction processing.
  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.
  Transaction Codes: Familiarize yourself with transaction codes related to monitoring and managing transactions, such as SM21 (System Log), ST22 (Dump Analysis), and SM37 (Job Monitoring).
  Performance Tuning: Consider performance tuning for your SAP system to reduce the likelihood of long-running transactions and improve overall system responsiveness.
  
  If the issue persists after trying the above solutions, it may be beneficial to consult with your SAP Basis team or reach out to SAP support for further assistance.