How To Fix /SAPAPO/OM_ERROR159 - Attempt was made to create two modes with the same number for a segment

SAP Error Message - Details

• Message type: E = Error

• Message class: /SAPAPO/OM_ERROR -

• Message number: 159

• Message text: Attempt was made to create two modes with the same number for a segment

Self-Explanatory Message

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Smart SAP Assistant

• What is the cause and solution for SAP error message /SAPAPO/OM_ERROR159 - Attempt was made to create two modes with the same number for a segment ?

  The SAP error message /SAPAPO/OM_ERROR159 indicates that there is an attempt to create two modes with the same number for a segment in the SAP Advanced Planning and Optimization (APO) module. This typically occurs in the context of defining modes for a planning segment, where each mode should have a unique identifier.
  Cause:
  The error is caused by the following scenarios:
  
  Duplicate Mode Numbers: You are trying to create or modify a mode for a segment, but the mode number you are using already exists for that segment.
  Incorrect Configuration: There may be a misconfiguration in the planning segment settings, leading to conflicts in mode definitions.
  Data Migration Issues: If data has been migrated from another system or if there have been recent changes in the configuration, it may lead to inconsistencies.
  
  Solution:
  To resolve this error, you can take the following steps:
  
  
  Check Existing Modes:
  
  Go to the transaction code /SAPAPO/OM (or the relevant transaction for managing modes).
  Review the existing modes for the segment in question and identify if there is indeed a duplicate mode number.
  
  
  
  Modify or Delete Duplicate Modes:
  
  If you find a duplicate mode number, you can either modify the existing mode to use a different number or delete the duplicate mode if it is not needed.
  
  
  
  Create a Unique Mode:
  
  When creating a new mode, ensure that the mode number is unique and does not conflict with existing modes.
  
  
  
  Review Configuration:
  
  Check the configuration settings for the planning segment to ensure that there are no inconsistencies or errors in the setup.
  
  
  
  Consult Documentation:
  
  Refer to SAP documentation or help resources for detailed guidance on managing modes in APO.
  
  
  
  Contact SAP Support:
  
  If the issue persists and you cannot identify the cause, consider reaching out to SAP support for assistance.
  
  
  
  Related Information:
  
  Transaction Codes: Familiarize yourself with relevant transaction codes such as /SAPAPO/OM for mode management and /SAPAPO/SDP94 for planning book settings.
  SAP Notes: Check for any SAP Notes related to this error message for additional insights or patches that may address the issue.
  User Forums: Engage with SAP community forums or user groups where similar issues may have been discussed.
  
  By following these steps, you should be able to resolve the error and successfully manage modes within your SAP APO environment.