How To Fix AIPLOC012 - Comparison in progress. Data was changed

SAP Error Message - Details

• Message type: E = Error

• Message class: AIPLOC - AIP: Cross-System Flow of Goods

• Message number: 012

• Message text: Comparison in progress. Data was changed

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message AIPLOC012 - Comparison in progress. Data was changed ?

  The SAP error message AIPLOC012 ("Comparison in progress. Data was changed") typically occurs in the context of the Advanced Planning and Optimization (APO) module, particularly when dealing with planning data comparisons. This error indicates that a comparison process is currently running, and during this process, the data has been modified, which can lead to inconsistencies or conflicts.
  Cause:
  
  Concurrent Data Changes: The most common cause of this error is that while a comparison operation is being executed, another user or process has made changes to the data being compared.
  Long-running Processes: If a comparison takes a long time to complete, and changes are made to the data during this time, it can trigger this error.
  Locking Mechanism: SAP uses locking mechanisms to prevent data inconsistencies. If a lock is not released properly or if there are issues with the locking mechanism, this error can occur.
  
  Solution:
  
  Wait and Retry: If the error is due to a long-running process, waiting for the comparison to complete and then retrying the operation may resolve the issue.
  Check for Active Processes: Use transaction codes like SM66 (Global Work Process Overview) or SM50 (Work Process Overview) to check if there are any active processes that might be holding locks on the data.
  Review Change Logs: Check the change logs to identify what changes were made and by whom. This can help in understanding if the changes were necessary or if they can be postponed.
  Lock Management: Ensure that the locking mechanism is functioning correctly. If necessary, consult with your SAP Basis team to investigate any locking issues.
  Data Consistency Check: After resolving the immediate issue, perform a data consistency check to ensure that the data is in a consistent state.
  User Communication: If multiple users are involved, communicate with them to coordinate changes to the data to avoid conflicts during comparison operations.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as:
  
  SM21: System Log
  SM37: Job Monitoring
  SLG1: Application Log
  
  
  SAP Notes: Check SAP Notes for any known issues or patches related to this error message. You can search the SAP Support Portal for specific notes that might address this error.
  Documentation: Review the SAP documentation for APO and the specific planning functions you are using to understand how comparisons are handled and any best practices for managing data changes during these operations.
  
  If the problem persists after trying the above solutions, it may be necessary to escalate the issue to your SAP support team or consult with SAP directly for further assistance.