How To Fix /SAPAPO/APP_FLAG_RES021 - Internal Error: Dependency check preprocessing not executed

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/APP_FLAG_RES -

• Message number: 021

• Message text: Internal Error: Dependency check preprocessing not executed

Self-Explanatory Message

Since SAP believes that this specific error message is 'self-explanatory,' no more information has been given.The majority of messages in the SAP system have a message text, however this is frequently insufficient to comprehend or resolve the problem.

To make things easier, more detailed information is frequently added to describe the issue, how to fix it, and the necessary steps or configuration modifications.

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/APP_FLAG_RES021 - Internal Error: Dependency check preprocessing not executed ?

  The SAP error message /SAPAPO/APP_FLAG_RES021 Internal Error: Dependency check preprocessing not executed typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the dependency check process during planning runs. This error can be caused by various factors, including configuration issues, data inconsistencies, or system performance problems.
  Causes:
  
  Configuration Issues: Incorrect settings in the APO system, particularly in the planning area or the planning book, can lead to this error.
  Data Inconsistencies: Missing or inconsistent master data (like product master, location master, etc.) can cause the dependency check to fail.
  Performance Issues: If the system is under heavy load or if there are performance bottlenecks, the preprocessing step may not execute properly.
  Transport Issues: If there have been recent transports that affect the APO configuration or data, it may lead to inconsistencies.
  Version Issues: Sometimes, the error can be related to specific versions of SAP APO or the underlying database.
  
  Solutions:
  
  Check Configuration: Review the configuration settings in the planning area and planning book. Ensure that all necessary settings are correctly defined.
  Validate Master Data: Check for any inconsistencies in the master data. Ensure that all relevant data is complete and correctly maintained.
  Monitor System Performance: Use transaction codes like ST22 (dump analysis) and SM21 (system log) to check for any performance issues or dumps that might provide more context on the error.
  Re-run the Planning Run: Sometimes, simply re-running the planning run can resolve transient issues.
  Check for Notes and Patches: Look for any SAP Notes or patches that might address this specific error. SAP frequently releases updates that fix known issues.
  Consult SAP Support: If the issue persists, consider reaching out to SAP support for assistance. Provide them with detailed information about the error, including any relevant logs or screenshots.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/DP for demand planning, /SAPAPO/SC for supply chain planning, and /SAPAPO/OM for order management.
  SAP Notes: Search the SAP Support Portal for notes related to this error message. You can use the error message number as a keyword.
  Documentation: Review the SAP APO documentation for best practices in configuration and data management.
  
  By following these steps, you should be able to diagnose and potentially resolve the error message /SAPAPO/APP_FLAG_RES021 Internal Error: Dependency check preprocessing not executed.