How To Fix /SAPAPO/SNPOPT279 - Optimizer input data: Reference not valid

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/SNPOPT -

• Message number: 279

• Message text: Optimizer input data: Reference not valid

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/SNPOPT279 - Optimizer input data: Reference not valid ?

  The SAP error message /SAPAPO/SNPOPT279 Optimizer input data: Reference not valid typically occurs in the context of SAP Advanced Planning and Optimization (APO) when the optimizer is unable to find a valid reference for the input data it is processing. This can happen for several reasons, and understanding the cause is crucial for resolving the issue.
  Causes:
  
  Invalid or Missing Master Data: The optimizer may be referencing master data (like materials, locations, or resources) that does not exist or is not properly maintained in the system.
  Incorrect Planning Version: The planning version being used may not be correctly set up or may not contain the necessary data.
  Data Inconsistencies: There may be inconsistencies in the data, such as missing or incorrect relationships between different master data objects.
  Configuration Issues: The configuration settings for the optimizer may not be correctly set, leading to references that cannot be resolved.
  Authorization Issues: The user executing the optimization may not have the necessary authorizations to access certain data.
  
  Solutions:
  
  Check Master Data: Verify that all relevant master data (materials, locations, resources) is correctly maintained and exists in the system. Ensure that there are no missing entries.
  Review Planning Version: Ensure that the correct planning version is being used and that it contains all necessary data. You may need to create or activate a planning version if it is missing.
  Data Consistency Check: Run consistency checks on the master data to identify and resolve any inconsistencies. This can often be done using transaction codes like /SAPAPO/MASTER_DATA or similar.
  Configuration Review: Review the configuration settings for the optimizer to ensure that they are set up correctly. This may involve checking the settings in the APO system and ensuring that all necessary parameters are defined.
  Authorization Check: Ensure that the user has the necessary authorizations to access the data required for the optimization process. This may involve checking user roles and authorizations in the SAP system.
  Logs and Traces: Check the application logs and traces for more detailed error messages that can provide additional context about the issue. This can help pinpoint the exact cause of the problem.
  
  Related Information:
  
  SAP Notes: Check for any relevant SAP Notes that may address this specific error message or provide additional troubleshooting steps.
  Documentation: Review the SAP APO documentation for guidance on setting up and maintaining master data, planning versions, and configuring the optimizer.
  Community Forums: Consider searching or posting in SAP community forums for insights from other users who may have encountered similar issues.
  
  By systematically checking these areas, you should be able to identify the root cause of the error and implement an appropriate solution.