How To Fix /SAPAPO/APP_FLAG_RES031 - Critical error: unknown where-used list ID: &1

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/APP_FLAG_RES -

• Message number: 031

• Message text: Critical error: unknown where-used list ID: &1

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_RES031 - Critical error: unknown where-used list ID: &1 ?

  The SAP error message /SAPAPO/APP_FLAG_RES031 Critical error: unknown where-used list ID: &1 typically occurs in the context of SAP Advanced Planning and Optimization (APO) when the system encounters an issue related to the where-used list for a specific object or ID. This error indicates that the system cannot find the specified where-used list ID, which can disrupt planning processes.
  Causes:
  
  Missing or Incorrect Where-Used List ID: The specified where-used list ID may not exist in the system or may have been deleted or incorrectly configured.
  Data Inconsistency: There may be inconsistencies in the master data or transactional data that lead to the system being unable to locate the where-used list.
  Configuration Issues: Incorrect configuration settings in the APO system can lead to this error.
  Transport Issues: If the where-used list ID was transported from another system, there may have been issues during the transport process.
  
  Solutions:
  
  Verify the Where-Used List ID: Check if the where-used list ID specified in the error message exists in the system. You can do this by navigating to the relevant transaction or using the appropriate report to list where-used lists.
  Check Master Data: Ensure that the master data related to the object in question is complete and correctly configured. This includes checking for any missing or inconsistent data.
  Recreate the Where-Used List: If the where-used list ID is missing or corrupted, you may need to recreate it. This can often be done through the relevant planning transaction or by executing a report that regenerates the where-used lists.
  Review Configuration Settings: Check the configuration settings in the APO system to ensure that they are set up correctly. This may involve consulting with your SAP Basis or APO configuration team.
  Transport Logs: If the issue arose after a transport, review the transport logs to identify any errors or warnings that may indicate what went wrong during the transport process.
  SAP Notes: Check the SAP Support Portal for any relevant SAP Notes that may address this specific error. There may be patches or updates that resolve known issues related to where-used lists.
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/RES01 (Resource Planning) or /SAPAPO/RES02 (Resource Overview) to help diagnose the issue.
  SAP Documentation: Review SAP documentation related to APO and where-used lists for additional context and troubleshooting steps.
  SAP Community: Engage with the SAP Community forums to see if other users have encountered similar issues and what solutions they found effective.
  
  If the problem persists after trying the above solutions, it may be necessary to involve SAP support for further assistance.