How To Fix /SAPAPO/OM_TS426 - Duplicate "out" relation

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_TS -

• Message number: 426

• Message text: Duplicate "out" relation

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_TS426 - Duplicate "out" relation ?

  The SAP error message /SAPAPO/OM_TS426 Duplicate "out" relation typically occurs in the context of SAP Advanced Planning and Optimization (APO) when there is an issue with the relationships defined in the planning object structure, particularly in the context of transportation or production planning.
  Cause:
  The error indicates that there are duplicate "out" relations defined for a particular object in the planning model. This can happen due to:
  
  Data Entry Errors: Duplicate entries may have been created inadvertently during data entry or configuration.
  Master Data Issues: Problems with master data, such as transportation lanes or production resources, can lead to duplicate relationships.
  Configuration Issues: Incorrect configuration in the planning object structure or in the way relationships are defined can also lead to this error.
  
  Solution:
  To resolve the /SAPAPO/OM_TS426 Duplicate "out" relation error, you can take the following steps:
  
  
  Check the Planning Object Structure:
  
  Go to the transaction /SAPAPO/OM and check the planning object structure for any duplicate entries.
  Ensure that each relationship is unique and correctly defined.
  
  
  
  Review Master Data:
  
  Check the master data related to the objects involved in the error. Look for duplicate entries in transportation lanes, production resources, or any other relevant master data.
  Use transactions like /SAPAPO/TS for transportation or /SAPAPO/PPDS for production to review and correct any duplicates.
  
  
  
  Adjust Relationships:
  
  If you find duplicate "out" relations, you will need to delete or modify the duplicates to ensure that each relationship is unique.
  Make sure to validate the changes to ensure that they do not affect other planning processes.
  
  
  
  Re-run the Planning Process:
  
  After making the necessary corrections, re-run the planning process to see if the error persists.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or notes related to the specific version of SAP APO you are using for any additional guidance or known issues.
  
  
  
  Seek Help from SAP Support:
  
  If the issue persists after trying the above steps, consider reaching out to SAP support for further assistance. They may provide patches or additional insights based on the specific configuration of your system.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/OM, /SAPAPO/TS, and /SAPAPO/PPDS for managing and reviewing planning objects and master data.
  SAP Notes: Check SAP Notes for any known issues or fixes related to this error message.
  Community Forums: Engage with SAP community forums or user groups where similar issues may have been discussed, and solutions shared.
  
  By following these steps, you should be able to identify and resolve the cause of the /SAPAPO/OM_TS426 Duplicate "out" relation error in your SAP APO system.