How To Fix REMPT120 - Changes were made to master plan

SAP Error Message - Details

• Message type: E = Error

• Message class: REMPT - Message Class for REM Planning Table (Rel. 99)

• Message number: 120

• Message text: Changes were made to master plan

Self-Explanatory Message

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• What is the cause and solution for SAP error message REMPT120 - Changes were made to master plan ?

  The SAP error message REMPT120, which states "Changes were made to master plan," typically occurs in the context of SAP's Advanced Planning and Optimization (APO) or similar planning modules. This error indicates that there have been modifications to the master planning data that need to be addressed before proceeding with certain operations, such as executing a planning run or saving changes.
  Cause:
  
  Concurrent Changes: The error often arises when multiple users are trying to make changes to the same planning data simultaneously. If one user updates the master plan while another is trying to execute a planning run, the system will throw this error.
  Data Locking: The system may have locked certain data due to ongoing processes or transactions, preventing further changes or executions.
  Inconsistent Data: If there are inconsistencies in the master planning data, such as missing or incorrect entries, this can trigger the error.
  
  Solution:
  
  Check for Concurrent Users: Ensure that no other users are currently making changes to the master plan. If possible, coordinate with team members to avoid simultaneous updates.
  Refresh Data: If you suspect that the data has changed, refresh your view or re-load the planning data to ensure you are working with the most current version.
  Review Locks: Check for any active locks on the planning data. You can use transaction codes like SM12 (for lock entries) to see if there are any locks that need to be released.
  Re-run the Planning Process: After ensuring that no other changes are being made, try to re-run the planning process or save your changes again.
  Consult Logs: Review any logs or messages in the system that might provide additional context about the changes made to the master plan.
  Contact Support: If the issue persists, consider reaching out to your SAP support team or consulting SAP Notes for any known issues or patches related to this error.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/MC90 (for planning book) or /SAPAPO/DP90 (for demand planning) to navigate the planning environment effectively.
  SAP Notes: Search for SAP Notes related to REMPT120 for any specific fixes or updates that may address this error.
  Documentation: Review SAP documentation on master planning and APO to understand the implications of changes made to the master plan and how to manage them effectively.
  
  By following these steps, you should be able to resolve the REMPT120 error and continue with your planning activities in SAP.