How To Fix /SAPAPO/SDP121 - Changes were reset.

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SDP -

• Message number: 121

• Message text: Changes were reset.

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SDP121 - Changes were reset. ?

  The SAP error message /SAPAPO/SDP121 Changes were reset typically occurs in the context of SAP Advanced Planning and Optimization (APO), particularly when working with the Supply Network Planning (SNP) or Demand Planning (DP) modules. This error indicates that changes made to a planning object (like a planning book or a key figure) were not saved or were reverted due to some issue.
  Causes:
  
  Data Conflicts: There may be conflicts between the data being processed and the existing data in the system. This can happen if multiple users are trying to make changes simultaneously.
  Locking Issues: If the planning object is locked by another user or process, your changes may not be allowed, leading to a reset of your changes.
  Inconsistent Data: If the data being processed is inconsistent or does not meet the required criteria, the system may reset the changes.
  User Authorizations: Lack of proper authorizations for the user trying to make the changes can also lead to this error.
  Technical Issues: There could be underlying technical issues, such as problems with the database or application server.
  
  Solutions:
  
  Check for Locks: Verify if the planning object is locked by another user. You can use transaction codes like SM12 to check for locks and release them if necessary.
  Review Authorizations: Ensure that the user has the necessary authorizations to make changes to the planning object. You may need to consult with your SAP security team.
  Data Consistency Check: Perform a consistency check on the data being processed. Ensure that all required fields are filled and that the data adheres to the expected formats.
  Retry Changes: After addressing any conflicts or locks, try to make the changes again.
  Check System Logs: Review the system logs (transaction SLG1) for any additional error messages or warnings that could provide more context about the issue.
  Consult SAP Notes: Look for relevant SAP Notes that may address this specific error. SAP frequently updates its knowledge base with solutions for known issues.
  Contact SAP Support: If the issue persists and you cannot identify the cause, consider reaching out to SAP support for further assistance.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/SDP94 (for planning book) and /SAPAPO/SDP91 (for planning area) to navigate through the planning objects.
  User Documentation: Review the user documentation for the specific APO module you are working with, as it may provide insights into common issues and their resolutions.
  Training: Consider training sessions or workshops on SAP APO to better understand the system's functionalities and error handling.
  
  By following these steps, you should be able to diagnose and resolve the /SAPAPO/SDP121 Changes were reset error effectively.